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Platinum Marquise Cut Engagement Rings

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

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The Milena Solitaire
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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

$832.00
Solitaire Knife-Edge Engagement Ring

The Cordelia Solitaire
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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

$1,084.00
Solitaire Tulip Cathedral Engagement Ring

The Jasmine Solitaire
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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

$1,084.00
Tapered Cathedral Solitaire Engagement Ring

The Tallulah Solitaire
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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

$1,103.00
Solitaire Knife-Edge Tulip Engagement Ring

The Ciara Solitaire
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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

$1,180.00
Split Double Band Solitaire Engagement Ring

The Althea Solitaire
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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

$1,250.00
Solitaire Knife-Edge Engagement Ring

The Elodie Solitaire
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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

$1,285.00
Classic Solitaire Engagement Ring

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

Two Stone Cushion Lab 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

Two Stone Asscher Lab 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

The Maddie Solitaire
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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

$1,310.00
Octagon Solitaire Engagement Ring

The Ottilie Solitaire
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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

$1,323.00
Solitaire Knife-Edge Engagement Ring

The Maude Solitaire
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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

$1,336.00
Classic Solitaire Engagement Ring

The Evelyn
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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

$1,348.00
Solitaire Kite Set Swirl Engagement Ring

The Nivea Solitaire
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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

$1,361.00
Petal Solitaire Engagement Ring

The Alessia Solitaire
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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

$1,373.00
Engraved Solitaire Engagement Ring

The Ora Solitaire
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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

$1,373.00
Petal Head Solitaire Engagement Ring

The Vera Solitaire
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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

$1,386.00
Solitaire Engagement Ring

The Anais Solitaire
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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

$1,449.00
Twisted Solitaire Engagement Ring

Two Stone Round Lab 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

The Nina Solitaire
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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

$1,462.00
Twisted Solitaire Engagement Ring

The Carmella Solitaire
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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

$1,525.00
Open-Twist Solitaire Engagement Ring

The Siena Solitaire
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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

$1,537.00
Solitaire Cathedral Engagement Ring

The Kendra Solitaire
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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

$1,550.00
Solitaire Cathedral Tulip Engagement Ring

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

Platinum Marquise Cut Engagement Rings

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 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 Marquise 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.