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- Crafted and certified in line with our standards since 1840
- Carat0.5
- ClarityVery Slightly Included 2
- ColorWesselton H
- CutRoyal 201
- Stones1
Diamond Ring 0.50 Carat Royal 201 Cut with Brilliant 18K White Gold
This 18K white gold ring is centered on a Royal 201 diamond, accented with 12 brilliant-cut diamonds. The Royal 201 is the most brilliant diamond you can buy anywhere in the world, available exclusively at Royal Coster Diamonds. Cut with 201 facets instead of the usual 57, it brings exceptional sparkle to a design made for special moments.
1 Royal 201 diamond
A 0.50 carat Royal 201 diamond takes center stage, catching the light with every movement.
12 brilliant-cut diamonds
The Royal 201 is accented with 12 brilliant-cut diamonds, 0.11 carat in total, adding extra brilliance to the design.
The Royal 201 diamond has a Wesselton H color grade and Very Slightly Included 2 clarity. The accent diamonds have a Top Wesselton color grade and Slightly Included clarity, adding to the overall brilliance.
18K White Gold
The ring is made from 18K white gold, whose cool, bright tone complements the white brilliance of the diamonds.
Wear it on its own as a statement, or stack it alongside other rings for a personal, layered look.
Specifications
Collection: Royal Coster Diamonds
Product type: Ring
Material: 18K White Gold
Number of Royal 201 diamonds: 1
Royal 201 carat weight: 0.50 carat
Number of accent diamonds: 12
Accent carat weight: 0.11 carat
Total carat weight: 0.61 carat
Diamond color: Wesselton H (Royal 201), Top Wesselton (accents)
Diamond clarity: Very Slightly Included 2 (Royal 201), Slightly Included (accents)
Diamond cut: Royal 201 and Brilliant
Available ring sizes: 48 to 58
Royal Coster Diamonds
Royal Coster Diamonds is the oldest still operating diamond polishing house in the world and has been based in Amsterdam since 1840. Each ring is carefully inspected, securely packaged, and insured during shipment.
In addition, we offer a lifelong cleaning service to help preserve the shine of your ring and diamonds over time.

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The 4C's
The 4C's of a diamond are the four key characteristics that determine the quality and value of a diamond: cut, carat weight, color, and clarity. Together, these four characteristics are used to evaluate the quality and value of a diamond, and are considered when determining a diamond's price.
Carat
The weight of a diamond is expressed in carats and points (1 ct = 100pt). ‘Carats’ come from ‘Carob’ seeds, which were originally used for their constant weight in nature (1 ct = 0.2 g). The carat and the color are the factors that influence the most the final price of the diamond.
Clarity
The clarity is a gemstone's relative freedom from internal imperfections. These imperfections are observed with a x10 magnifier ('loupe') and affect the final value of the diamond differently.
Color
Diamonds are found in nature in different colors. White diamonds can be more or less yellow and are categorised with a letter between D (commonly known as ‘River’) to Z . The different naming systems vary depending on the certifier. Diamonds are also found in all colors; the rarest colors are classified as Fancy-colored diamonds.
Cut
The cut is the diamond’s shape. A cut grade describes the proportions of the cut and the quality of its symmetry and polish. A perfect cut makes the best sparkle.






