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Platinum Princess Cut Engagement Rings

Shop our beautiful collection of Platinum Princess Cut Engagement Rings. Choose from our large selection of natural and lab grown diamonds to complete your engagement ring.

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Metal
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Solitaire Knife-Edge Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$589.00 $693.00
2mmBand width
Two-Tone Tapered Cathedral Solitaire Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$768.00 $903.00
6gMetal Wt
2.5mmBand width
Two-Tone Solitaire Diamond Tulip Cathedral Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
Solitaire Twist Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$791.00 $930.00
2mmBand width
Twisted Metal Halo Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$867.00 $1,020.00
2mmBand width
Classic Solitaire Diamond Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$867.00 $1,020.00
1.8mmBand width
Solitaire Diamond Beaded Engagement Ring With Surprise Diamonds
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$884.00 $1,040.00
3.9gMetal Wt
2mmBand width
0.03Min. CTW
Solitaire Kite Set Swirl Diamond Engagement Ring
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14kt White Gold
14kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt White Gold
18kt White Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
Petal Inspired Solitaire Diamond Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$914.00 $1,075.00
1.8mmBand width
Petal Head Solitaire Engagement Ring
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14kt White Gold
14kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt White Gold
18kt White Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$927.00 $1,090.00
2mmBand width
Octagon Solitaire Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$928.00 $1,092.00
5.3gMetal Wt
2.5mmBand width
Kite Set Solitaire Diamond Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$931.00 $1,095.00
1.8mmBand width
0.14Min. CTW
Modern Solitaire Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$935.00 $1,100.00
1.8mmBand width
Two-Tone Solitaire Diamond Knife-edge Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$938.00 $1,103.00
4.7gMetal Wt
2.5mmBand width
Two-Tone Solitaire Diamond Knife-edge Tulip Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$938.00 $1,103.00
5gMetal Wt
2.5mmBand width
Two-Tone Solitaire Diamond Cathedral Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$955.00 $1,124.00
5.7gMetal Wt
2mmBand width
Engraved Solitaire Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$973.00 $1,145.00
5gMetal Wt
2.2mmBand width
Twisted Solitaire Diamond Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$978.00 $1,150.00
2.3mmBand width
Twisted Solitaire Diamond Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$986.00 $1,160.00
2.3mmBand width
Classic Solitaire Diamond Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$986.00 $1,160.00
2mmBand width
Split Double Band Solitaire Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$1,003.00 $1,180.00
7.4mmBand width
Open-Twist Solitaire Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$1,029.00 $1,210.00
4mmBand width
Ribbon Solitaire Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$1,029.00 $1,210.00
2.5mmBand width
Twisted Rope Diamond Engagement Ring
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14kt White Gold
14kt White Gold
18kt White Gold
18kt White Gold
18kt Yellow Gold
18kt Yellow Gold
18kt Rose Gold
18kt Rose Gold
Platinum
Platinum
$1,041.00 $1,225.00
2mmBand width
0.07Min. CTW
You’ve viewed 24 of 141 products

Shop our beautiful collection of Platinum Princess Cut Engagement Rings. Choose from our large selection of natural and lab grown diamonds to complete your engagement ring.

Platinum Princess Cut Engagement Rings

Shape

Princess cut diamonds are truly distinctive due to their 90-degree angles and sparkling facets. A modified brilliant cut with a square shape, the emphasis with the princess shape is on bold, modern lines, and lots of brilliance. Princess cut diamonds are a beautiful choice for engagement rings, earrings, and pendants.

Although it was only invented in the 1980s, this diamond cut is one of the most popular choices for engagement rings. For a perfectly square princess cut diamond, choose a diamond with a length to width ratio of 1.00 - 1.05.

The sharp corners of princess cut diamonds are prone to chipping, so choose a setting that will protect the diamond’s corners. To make your princess cut diamond appear larger, choose a halo setting, or let it stand out on its own in a solitaire setting.

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 and Natural Diamonds

To complete your engagement ring, choose from our large selection of certified natural and lab grown diamonds. Whether you are looking for a 1 carat diamond or a 5 carat diamond, you are sure to find something that matches your expectations. Save 40% or more by choosing from our lab grown diamond collections.

All Ritani diamonds are certified by independent diamond grading laboratories. Our earth grown diamonds are certified by either the AGS or GIA – the two most respected independent grading labs in the world, while most of our lab grown diamonds are certified by IGI, the most respected independent lab diamond grading labaratory.

If you need help selecting your Platinum Princess Cut Engagement Rings, reach out to us at 1-888-9RITANI or chat now.

Frequently Asked Questions

  • How much should I spend for an engagement ring?
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    You may have heard the rule that you should spend 2 or 3 months of your income on your engagement ring, but this rule was just a marketing ploy created by De Beers. Your spend should be based on your budget and the type of engagement ring you are looking to buy.

  • What should I know before buying an engagement ring?
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    1. Budget - how much you are willing to spend on a ring
    2. Ring Style - are you looking for a classic ring or maybe a vintage ring?
    3. Metal - rings can be made of platinum or different types of gold
    4. Shape - the shape of the center diamond in your engagement ring
    5. 4 Cs - the color, clarity, cut and size of your diamond are important criteria in choosing your diamond

  • What is the average cost of an engagement ring?
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    For natural diamonds, the average cost is around $6,000 and the average carat weight is 1.25 carats. For lab grown diamonds, the average cost is $4,000 and the average carat weight is 2.5 carats.

  • What is a karat?
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    Since gold is too soft to be used in a ring, it is often mixed with other metals. The purity of gold is measured in karats. One karat is one part out of 24. Therefore, 24 karat gold is 100% gold (24/24), 18 karat is 75% gold (18/24), while 14 karat is about 58% gold (14/24).

  • Is platinum a good choice for an engagement ring?
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    Platinum is a very popular choice for engagement rings. It is the most durable out of the engagement ring metals and is naturally white so it does not require rhodium plating.

  • Is platinum more expensive than gold?
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    The price of precious metals are constantly fluctuating. However, platinum rings are usually made of 90-95% platinum, while gold rings are typically made of only 75% gold (for 18 karat gold) or less. Therefore, platinum rings are typically more expensive than gold rings.