Cart (0)
1 Choose your diamond
1. Diamond
Design Diamond Icon
2 Choose your Setting
2. Setting
Design Ring Setting Icon
3 View Completed
3. Preview
Design Ring Setting Icon
Edit Columns

Platinum Marquise Cut Sidestone Engagement Rings

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

Filters:
Style
Shape
Metal
Price
Band Width
The Alida
Video play badge
Add To List
Save for later
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

$1,280.00
Vintage Diamond Accent Engagement Ring

The Sloan
Video play badge
Add To List
Save for later
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

$1,400.00
Graduating Diamond Sidestone Engagement Ring

The Edith
Video play badge
Add To List
Save for later
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

$1,410.00
Ribbon Engagement Ring

The Dalia
Video play badge
Add To List
Save for later
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

$1,460.00
Cluster Sidestone Diamond Engagement Ring

The Gio
Video play badge
Add To List
Save for later
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

$1,481.00
Engraved Diamond Engagement Ring

The Isadora
Video play badge
Add To List
Save for later
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

$1,485.00
Cluster Sidestone Diamond Engagement Ring

The Priya Solitaire
Video play badge
Add To List
Save for later
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

$1,490.00
Classic Solitaire Engagement Ring

The Zariah
Video play badge
Add To List
Save for later
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

$1,554.00
Coil Twist Diamond Engagement Ring

The Ciela
Video play badge
Add To List
Save for later
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

$1,590.00
Split Double Band Solitaire Engagement Ring

The Luna
Video play badge
Add To List
Save for later
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

$1,605.00
Half Diamond Twist Engagement Ring

The Gemma Halo
Video play badge
Add To List
Save for later
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

$1,630.00
Ribbon Diamond Halo Engagement Ring

The Gaia
Video play badge
Add To List
Save for later
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

$1,670.00
French-Set Diamond Band Engagement Ring

The Zahra
Video play badge
Add To List
Save for later
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

$1,680.00
Pavé Vaulted Diamond Engagement Ring

The Tyler Bezel
Video play badge
Add To List
Save for later
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

$1,730.00
Bezel-Set Pavé Diamond Band Engagement Ring

The Mikaela
Video play badge
Add To List
Save for later
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

$1,733.00
Floating Diamond Engagement Ring

The Stella Solitaire
Video play badge
Add To List
Save for later
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

$1,755.00
Classic Solitaire Engagement Ring with Hidden Halo

The Jolie
Video play badge
Add To List
Save for later
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

$1,775.00
Braided Scroll Engagement Ring

The Yareli
Video play badge
Add To List
Save for later
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

$1,780.00
Knife-Edge Diamond Band Engagement Ring

The Rose
Video play badge
Add To List
Save for later
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

$1,785.00
French-Set Diamond Band Engagement Ring

The Amara
Video play badge
Add To List
Save for later
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

$1,810.00
Diamond Collar Solitaire Engagement Ring

The Linnie
Video play badge
Add To List
Save for later
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

$1,820.00
Petal Head Diamond Band Engagement Ring

The Anastasia
Video play badge
Add To List
Save for later
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

$1,900.00
Round & Marquise Sidestone Diamond Engagement Ring

The Mia
Video play badge
Add To List
Save for later
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

$1,900.00
Petite Half Diamond Twist Engagement Ring

The Sara
Video play badge
Add To List
Save for later
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

$1,985.00
Diamond Gallery Engagement Ring

You’ve viewed 24 of 62 products

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

Platinum Marquise Cut Sidestone 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.

Ring Style

Sidestone engagement rings are one of the most popular setting styles at Ritani. This style features feature smaller diamonds in the band for added artistry and sparkle. Sidestone engagement rings pair beautifully with all diamond shapes, but look especially stunning with emerald-cut diamonds or Asscher-cut diamonds. These step-cut diamond-shapes don't sparkle much, so a diamond sidestone setting will add more sparkle to the ring. There are many different ways in which diamonds can be set into the band of an engagement ring, each creating a different look. French-set diamonds are diamonds that are raised, allowing extra light to enter the stone, and are set with tiny beads of metal. Pavé diamonds look like they are paved into the band and are set with tiny points of metal. Micropavé diamonds are set the same way, but with smaller clusters of diamonds set closer together. Channel-set diamonds are the most secure - they are held within a metal channel.

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 Sidestone 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?
    arrow

    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?
    arrow

    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?
    arrow

    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?
    arrow

    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?
    arrow

    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?
    arrow

    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.