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1.5 Carat Marquise Cut Lab Grown Diamond Engagement Rings in Platinum
Looking for a beautiful 1.5 Carat Marquise Cut Lab Grown Diamond Engagement Rings in Platinum? We have done all the hard work for you. We have carefully curated some of our best selling settings and paired them with some of our best value diamonds. Don't find what you're looking for? Check out our full engagement ring collection and choose from over 250,000 diamonds.
14kt white gold/18kt white gold/platinum/marquise/top
The Gaia
Discover the epitome of elegance with our Timeless French-set Diamond Band Engagement Ring, specifically designed with the modern woman in mind. Filled with sparkling diamonds, this unique engagement ring adds a delightful touch to the sophisticated, stylish woman's hand. This magnificent piece represents the perfect blend of class and luxury, making it one of the most trend-setting engagement rings for women. Exuding endless sparkle from French-set diamonds, this ring serves as a constant reminder of your everlasting bond. This diamond engagement ring features a low-profile design, perfect for ensuring continuous comfort while maintaining an exquisite appearance. Indulge in the celebration of love and commitment with this unique piece, specifically crafted to spark joy and symbolize a promise of forever. Match it with our Women's 0.28ctw French-set Diamond Ring and create the perfect pair of diamond engagement rings, a symbol of the everlasting journey of love. Elevate the experience of one of the most unforgettable moments in life with this Timeless French-set Diamond Band Engagement Ring, our unique, head-turning design that stands out among the run-of-the-mill options. Discover the magic of love with this piece that's set to sparkle for a lifetime. Read More
The Gaia
Discover the epitome of elegance with our Timeless French-set Diamond Band Engagement Ring, specifically designed with the modern woman in mind. Filled with sparkling diamonds, this unique engagement ring adds a delightful touch to the sophisticated, stylish woman's hand. This magnificent piece represents the perfect blend of class and luxury, making it one of the most trend-setting engagement rings for women. Exuding endless sparkle from French-set diamonds, this ring serves as a constant reminder of your everlasting bond. This diamond engagement ring features a low-profile design, perfect for ensuring continuous comfort while maintaining an exquisite appearance. Indulge in the celebration of love and commitment with this unique piece, specifically crafted to spark joy and symbolize a promise of forever. Match it with our Women's 0.28ctw French-set Diamond Ring and create the perfect pair of diamond engagement rings, a symbol of the everlasting journey of love. Elevate the experience of one of the most unforgettable moments in life with this Timeless French-set Diamond Band Engagement Ring, our unique, head-turning design that stands out among the run-of-the-mill options. Discover the magic of love with this piece that's set to sparkle for a lifetime. Read More
The Gaia / 1.5 CTW Marquise Lab Diamonds
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$3,139.00
Platinum / Marquise / Very Good | F | VS2
The Gaia / 1.51 CTW Marquise Lab Diamonds
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$3,116.00
Platinum / Marquise / Very Good | G | VS2
The Gaia / 1.5 CTW Marquise Lab Diamonds
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$3,193.00
Platinum / Marquise / Very Good | F | VS2
The Gaia / 1.51 CTW Marquise Lab Diamonds
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$2,999.00
Platinum / Marquise / Very Good | G | VS2
The Gaia / 1.51 CTW Marquise Lab Diamonds
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$3,213.00
Platinum / Marquise / Very Good | F | SI1
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The Siena Solitaire
Discover our range of unique engagement rings for women that will inspire an unforgettable proposal. This Two-Tone Solitaire Diamond Cathedral Engagement Ring offers a modern aesthetic with its exclusive X design in the diamond setting, symbolizing your first kiss and the O in the band representing your embrace. This rare combination provides a distinctive style that sets it apart from the ordinary diamond engagement rings and adds a captivating appeal to this piece. Meticulously crafted, this ring maintains a clean, contemporary look while never compromising on opulence. The modern yet classic aesthetics of a round diamond solitaire beautifully nestled within a platinum prong showcase the ring's timeless appeal. This approach not only adds to the ring's overall durability but also allows an incredible light performance, amplifying the brilliance of the diamond. The unique tapered shoulder on the band offers a sleek and smooth surface that reflects light beautifully, adding more shine and glitter to this amazing piece. The cathedral setting, popular in engagement rings for women, provides structural stability without compromising design. This ring serves an exceptional blend of strength and sophistication, making it the perfect token of your love and affection. This diamond engagement ring exceeds the expectation of a modern, unique, and timeless design. A perfect blend of love symbols intertwined with meticulous craftsmanship, this piece is more than an engagement ring; it's a story of your love journey that she will cherish forever. Read More
The Siena Solitaire
Discover our range of unique engagement rings for women that will inspire an unforgettable proposal. This Two-Tone Solitaire Diamond Cathedral Engagement Ring offers a modern aesthetic with its exclusive X design in the diamond setting, symbolizing your first kiss and the O in the band representing your embrace. This rare combination provides a distinctive style that sets it apart from the ordinary diamond engagement rings and adds a captivating appeal to this piece. Meticulously crafted, this ring maintains a clean, contemporary look while never compromising on opulence. The modern yet classic aesthetics of a round diamond solitaire beautifully nestled within a platinum prong showcase the ring's timeless appeal. This approach not only adds to the ring's overall durability but also allows an incredible light performance, amplifying the brilliance of the diamond. The unique tapered shoulder on the band offers a sleek and smooth surface that reflects light beautifully, adding more shine and glitter to this amazing piece. The cathedral setting, popular in engagement rings for women, provides structural stability without compromising design. This ring serves an exceptional blend of strength and sophistication, making it the perfect token of your love and affection. This diamond engagement ring exceeds the expectation of a modern, unique, and timeless design. A perfect blend of love symbols intertwined with meticulous craftsmanship, this piece is more than an engagement ring; it's a story of your love journey that she will cherish forever. Read More
The Siena Solitaire / 1.5 CTW Marquise Lab Diamonds
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$2,572.00
Platinum / Marquise / Very Good | F | VS2
The Siena Solitaire / 1.51 CTW Marquise Lab Diamonds
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$2,549.00
Platinum / Marquise / Very Good | G | VS2
The Siena Solitaire / 1.5 CTW Marquise Lab Diamonds
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$2,626.00
Platinum / Marquise / Very Good | F | VS2
The Siena Solitaire / 1.51 CTW Marquise Lab Diamonds
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$2,432.00
Platinum / Marquise / Very Good | G | VS2
The Siena Solitaire / 1.51 CTW Marquise Lab Diamonds
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$2,646.00
Platinum / Marquise / Very Good | F | SI1
Browse The Full Catalog
Looking for different ring styles or more diamonds? Shop our full collection of engagement rings.
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The Jasmine Solitaire
Presenting our Two-Tone Tapered Cathedral Solitaire Engagement ring – an embodiment of timeless elegance and style. It's a prime choice for those looking for unique engagement rings for women. With its intricately designed X and O setting referencing your special first kiss and melanoid hug, this exceptional piece radiates romantic symbolism. Our Two-Tone Tapered Cathedral Solitaire Engagement ring integrates a sleek design that attracts attention towards the center diamond. It's an ideal choice for those looking for affordable engagement rings without compromising on quality. Its inspiring diamond setting highlights its spectacular appeal, making it one of the most exclusive diamond engagement rings for that special proposal. This exquisite solitaire ring is far from a run-of-the-mill design, flaunting a two-tone concept that adds depth and versatility to its demeanor. It's an example of a cheap engagement ring that not only offers unbeatable value but also delivers superior performance with its sturdy platinum prongs. The Two-Tone Tapered Cathedral Solitaire Engagement ring is not only a symbol of your everlasting love but also a mark of quality and superiority. Let this unique diamond engagement ring serve as a reminder of your affordable yet precious commitment! Read More
The Jasmine Solitaire
Presenting our Two-Tone Tapered Cathedral Solitaire Engagement ring – an embodiment of timeless elegance and style. It's a prime choice for those looking for unique engagement rings for women. With its intricately designed X and O setting referencing your special first kiss and melanoid hug, this exceptional piece radiates romantic symbolism. Our Two-Tone Tapered Cathedral Solitaire Engagement ring integrates a sleek design that attracts attention towards the center diamond. It's an ideal choice for those looking for affordable engagement rings without compromising on quality. Its inspiring diamond setting highlights its spectacular appeal, making it one of the most exclusive diamond engagement rings for that special proposal. This exquisite solitaire ring is far from a run-of-the-mill design, flaunting a two-tone concept that adds depth and versatility to its demeanor. It's an example of a cheap engagement ring that not only offers unbeatable value but also delivers superior performance with its sturdy platinum prongs. The Two-Tone Tapered Cathedral Solitaire Engagement ring is not only a symbol of your everlasting love but also a mark of quality and superiority. Let this unique diamond engagement ring serve as a reminder of your affordable yet precious commitment! Read More
The Jasmine Solitaire / 1.5 CTW Marquise Lab Diamonds
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$2,119.00
Platinum / Marquise / Very Good | F | VS2
The Jasmine Solitaire / 1.51 CTW Marquise Lab Diamonds
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$2,096.00
Platinum / Marquise / Very Good | G | VS2
The Jasmine Solitaire / 1.5 CTW Marquise Lab Diamonds
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$2,173.00
Platinum / Marquise / Very Good | F | VS2
The Jasmine Solitaire / 1.51 CTW Marquise Lab Diamonds
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$1,979.00
Platinum / Marquise / Very Good | G | VS2
The Jasmine Solitaire / 1.51 CTW Marquise Lab Diamonds
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$2,193.00
Platinum / Marquise / Very Good | F | SI1
Browse The Full Catalog
Looking for different ring styles or more diamonds? Shop our full collection of engagement rings.
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The Cordelia Solitaire
Showcase your enduring love with our Two-Tone Solitaire Diamond Tulip Cathedral Engagement Ring, an absolute favorite among engagement rings for women. This ring carries a distinctive charm, being a unique blend of elegance and timeless style. Epitomizing true beauty and class, it stands out with its single diamond gripped delicately within a remarkable tulip cathedral setting. Dress your finger with this unique piece and let the diamond sparkle announce your engagement. Offered at a surprisingly cheap price, this ring is a testament to the fact that luxury and affordability can indeed go hand in hand. Our Solitaire Diamond Tulip Cathedral Engagement Ring is not just an ornament, but a brilliantly crafted piece of art that adds the right amount of sparkle to your special moment. Highly affordable, our exquisite solitaire style engagement ring is designed for those who value grandeur without compromising their budget. This unrivaled piece redefines affordable engagement rings, translating luxurious design into a delightful reality. A perfect blend of style and substance, diamond engagement rings like our Two-Tone Solitaire Diamond Tulip Cathedral don't just capture eyes, they capture hearts. Truly, it's a ring designed to dazzle, without having to break the bank. Get ready to fall in love all over again with this beautiful, budget-friendly jewel. Read More
The Cordelia Solitaire
Showcase your enduring love with our Two-Tone Solitaire Diamond Tulip Cathedral Engagement Ring, an absolute favorite among engagement rings for women. This ring carries a distinctive charm, being a unique blend of elegance and timeless style. Epitomizing true beauty and class, it stands out with its single diamond gripped delicately within a remarkable tulip cathedral setting. Dress your finger with this unique piece and let the diamond sparkle announce your engagement. Offered at a surprisingly cheap price, this ring is a testament to the fact that luxury and affordability can indeed go hand in hand. Our Solitaire Diamond Tulip Cathedral Engagement Ring is not just an ornament, but a brilliantly crafted piece of art that adds the right amount of sparkle to your special moment. Highly affordable, our exquisite solitaire style engagement ring is designed for those who value grandeur without compromising their budget. This unrivaled piece redefines affordable engagement rings, translating luxurious design into a delightful reality. A perfect blend of style and substance, diamond engagement rings like our Two-Tone Solitaire Diamond Tulip Cathedral don't just capture eyes, they capture hearts. Truly, it's a ring designed to dazzle, without having to break the bank. Get ready to fall in love all over again with this beautiful, budget-friendly jewel. Read More
The Cordelia Solitaire / 1.5 CTW Marquise Lab Diamonds
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$2,119.00
Platinum / Marquise / Very Good | F | VS2
The Cordelia Solitaire / 1.51 CTW Marquise Lab Diamonds
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$2,096.00
Platinum / Marquise / Very Good | G | VS2
The Cordelia Solitaire / 1.5 CTW Marquise Lab Diamonds
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$2,173.00
Platinum / Marquise / Very Good | F | VS2
The Cordelia Solitaire / 1.51 CTW Marquise Lab Diamonds
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$1,979.00
Platinum / Marquise / Very Good | G | VS2
The Cordelia Solitaire / 1.51 CTW Marquise Lab Diamonds
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$2,193.00
Platinum / Marquise / Very Good | F | SI1
Browse The Full Catalog
Looking for different ring styles or more diamonds? Shop our full collection of engagement rings.
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The Ottilie Solitaire
Presenting an exceptional choice among diamond engagement rings, the Two-Tone Solitaire Diamond Knife-edge Engagement Ring is the embodiment of elegance and style. Crafted with meticulous attention to detail, this ring dazzles with its unique design features. Thoroughly modern yet timelessly classic, this is one of those engagement rings for women that effortlessly combines charm with sophistication. When it comes to opting for unique engagement rings, nothing can surpass this solitaire style. The intriguing design includes an 'X' etched into the setting's gallery, marking a symbolic representation of your first kiss. The perfectly round 'O' of the ring band symbolizes your first embrace, making this ring an emblem of your love story. The band, with its knife-edge finish, elegantly reflects light, emphasizing the gleam of the embedded precious metal. This unique touch imparts a spectacular aesthetic appeal to the ring, distinguishing it from common diamond engagement rings. Safe, secure yet stylish, the prongs of the setting are crafted with platinum for added strength and security. The stunning solitaire diamond radiates brilliance, further enhancing the allure of this engagement ring. Offering an unconventional spin on classic engagement rings for women, this ring is both an embodiment of your love and a distinct style statement. Delicate yet daring, this is a ring that will be cherished and admired for a lifetime. Read More
The Ottilie Solitaire
Presenting an exceptional choice among diamond engagement rings, the Two-Tone Solitaire Diamond Knife-edge Engagement Ring is the embodiment of elegance and style. Crafted with meticulous attention to detail, this ring dazzles with its unique design features. Thoroughly modern yet timelessly classic, this is one of those engagement rings for women that effortlessly combines charm with sophistication. When it comes to opting for unique engagement rings, nothing can surpass this solitaire style. The intriguing design includes an 'X' etched into the setting's gallery, marking a symbolic representation of your first kiss. The perfectly round 'O' of the ring band symbolizes your first embrace, making this ring an emblem of your love story. The band, with its knife-edge finish, elegantly reflects light, emphasizing the gleam of the embedded precious metal. This unique touch imparts a spectacular aesthetic appeal to the ring, distinguishing it from common diamond engagement rings. Safe, secure yet stylish, the prongs of the setting are crafted with platinum for added strength and security. The stunning solitaire diamond radiates brilliance, further enhancing the allure of this engagement ring. Offering an unconventional spin on classic engagement rings for women, this ring is both an embodiment of your love and a distinct style statement. Delicate yet daring, this is a ring that will be cherished and admired for a lifetime. Read More
The Ottilie Solitaire / 1.5 CTW Marquise Lab Diamonds
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$2,358.00
Platinum / Marquise / Very Good | F | VS2
The Ottilie Solitaire / 1.51 CTW Marquise Lab Diamonds
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$2,335.00
Platinum / Marquise / Very Good | G | VS2
The Ottilie Solitaire / 1.5 CTW Marquise Lab Diamonds
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$2,412.00
Platinum / Marquise / Very Good | F | VS2
The Ottilie Solitaire / 1.51 CTW Marquise Lab Diamonds
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$2,218.00
Platinum / Marquise / Very Good | G | VS2
The Ottilie Solitaire / 1.51 CTW Marquise Lab Diamonds
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$2,432.00
Platinum / Marquise / Very Good | F | SI1
Browse The Full Catalog
Looking for different ring styles or more diamonds? Shop our full collection of engagement rings.
SHOP NOW

1.5 Carat Marquise Cut Lab Grown Diamond Engagement Rings in Platinum

Carat Weight

1.5 carat diamonds are bigger than the average engagement ring diamond and are sure to make a statement and impress your significant other. The large size of your diamond will be very noticeable and make it stand out among the others

Shape

The marquise cut, somewhat similar to oval and pear shaped diamonds, has pointed ends and elegant, curved sides. It is the diamond shape with the largest surface area of all popular cuts, which means that you can find a larger-looking diamond for the same value.

The marquise cut diamond is a great choice for an engagement ring if you are looking for a diamond that will elongate your finger. King Louis XIV of France, who wanted a new diamond shape for the woman he loved – Marquise de Pompadour - commissioned the marquise cut. It is said that he wanted the diamond to be reminiscent of her smile. Because of this, the marquise shape has very romantic connotations.

If you are looking to make your marquise cut diamond appear larger, try a halo setting. Or let this unique cut stand out in a solitaire setting.

Because the marquise cut diamond has pointed ends, it is prone to chipping. Be sure to choose a setting that will protect the pointed ends.

Metal

Platinum is a very popular choice for engagement rings. Platinum is a white metal that is also extremely durable. Because platinum is too soft in it's pure form to be used for jewelry, it is usually combined with a small percentage of other metal alloys such as cobalt, iridium, ruthenium, or palladium.

Lab Grown Diamonds

Lab grown diamonds are real diamonds that are created in the lab instead of deep inside the earth's crust. They are physically, chemically, and visually identical to earth grown diamonds and are indistinguishable even by a trained gemologist.

The only difference between lab grown diamonds and earth grown diamonds is how they were created. Earth grown diamonds are created under high pressure and temperature deep under the earth's surface, while lab grown diamonds are created under high pressure and temperature(HPHT) in a lab

Lab grown diamonds are typically between 30 and 50 percent cheaper than earth grown diamonds! Therefore they have become a very popular choice for engagement ring, since you can get a bigger size diamond for your budget.

All Ritani lab grown diamonds are certified. Most of our lab grown diamonds are certified by IGI, the most respected independent lab diamond grading labaratory.

If you need help selecting your 1.5 Carat Marquise Cut Lab Grown Diamond Engagement Rings in Platinum, reach out to us at 1-888-9RITANI or chat now.

Frequently Asked Questions

  • How much does a 1.5 Carat Marquise Cut Lab Grown Diamond Engagement Rings in Platinum cost?
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    A 1.5 Carat Marquise Cut Lab Grown Diamond Engagement Rings in Platinum can cost anywhere between $1,130 and $11,800 depending on the 4 cs and the type of setting you choose. The median price is $3,900.