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Platinum Round Cut Three Stone Engagement Rings

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

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The Bea Three-Stone
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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

$2,711.00 $3,190.00
6.52gMetal Wt
2.1mmBand width
0.39Min. CTW

The Ellie Three-Stone
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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

$3,062.00 $3,602.00
6.76gMetal Wt
2.8mmBand width
0.38Min. CTW

The Lina Halo
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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

$3,302.00 $3,885.00
5.41gMetal Wt
2mmBand width
0.47Min. CTW

The Olivia Three-Stone
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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

$3,651.00 $4,295.00
6.35gMetal Wt
2.5mmBand width
0.5Min. CTW

The Ava Three-Stone
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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

$3,802.00 $4,473.00
6.64gMetal Wt
2.5mmBand width
0.4Min. CTW

The Emma Three-Stone
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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

$3,802.00 $4,473.00
7.03gMetal Wt
2.5mmBand width
0.25Min. CTW

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

Platinum Round Cut Three Stone Engagement Rings

Shape

Round cut diamonds (also called brilliant-cut diamonds) are revered for their classic shape and incredible sparkle. Cut with 58 facets — or 57, if there is no culet — the round shape was designed to produce as much sparkle as possible. As sparkle is what many people are looking for when they buy a diamond, round cuts are immensely popular.

60% of the diamonds in our inventory are round-shaped, making it easy for you to find the right one for your needs. Not only are round cut diamonds the most sparkly, but they are also the most popular diamond shape. However, because they are the most sparkly and the most popular, this makes them the most expensive diamond shape.

Round cut diamonds are perfect for custom jewelry, such as earrings and pendants. To make your round cut diamond appear even larger, choose a halo setting. Or let your round cut diamond stand out on its own in a solitaire setting.

Ring Style

Why have one diamond when you can have three? In a three-stone engagement ring, the stones represent your past, present, and future together as a couple. This style is also sometimes referred to as a trilogy engagement ring. The most popular three-stone engagement ring styles are rings with baguette side stones flanking the center diamond or round diamond side stones. Some famous three-stone engagement rings include Meghan Markle's engagement ring, a cushion-cut diamond ring with two round-cut diamonds, and Amal Clooney's engagement ring, an emerald-cut diamond ring with two baguette-cut diamonds.

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 Round Cut Three Stone 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.