Tourmaline Solitaire Ring 0.55 Carat 18K White Gold
The Tourmaline Solitaire Ring 0.55 Carat 18K White Gold combines natural color with refined craftsmanship. This ring is crafted from 18K white gold and set with a single tourmaline of 0.55 carat, held in a prong setting at the center of a sculptural, open bypass band. The warm green tones of the tourmaline against the cool white gold give the ring a distinctive, contemporary look, making it a timeless choice for everyday wear or as a special gift.
Tourmaline
At the heart of the ring sits a single tourmaline of 0.55 carat, held in a prong setting that lets in light from all sides. Its natural green color, with subtle shifts of tone, forms the focal point of the design.
18K white gold
The ring is crafted from 18K white gold, giving the metal a cool and luxurious shine. The bright white-gold tone beautifully complements the color of the tourmaline and creates a clean, modern appearance.
Its polished band curves around the stone in a flowing, open design and makes the ring comfortable to wear every day and easy to combine with other fine jewelry.
Specifications
Collection: Royal Coster Diamonds
Product type: Ring
Material: 18K white gold
Number of tourmalines: 1
Tourmaline weight: 0.55 carat
Total gemstone weight: 0.55 carat
Setting: Prong-set, open bypass design
Ring sizes: 47 to 62
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 piece 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 tourmaline over time.
Tourmaline Solitaire Ring 0.55 Carat 18K White Gold
The Tourmaline Solitaire Ring 0.55 Carat 18K White Gold combines natural color with refined craftsmanship. This ring is crafted from 18K white gold and set with a single tourmaline of 0.55 carat, held in a prong setting at the center of a sculptural, open bypass band. The warm green tones of the tourmaline against the cool white gold give the ring a distinctive, contemporary look, making it a timeless choice for everyday wear or as a special gift.
Tourmaline
At the heart of the ring sits a single tourmaline of 0.55 carat, held in a prong setting that lets in light from all sides. Its natural green color, with subtle shifts of tone, forms the focal point of the design.
18K white gold
The ring is crafted from 18K white gold, giving the metal a cool and luxurious shine. The bright white-gold tone beautifully complements the color of the tourmaline and creates a clean, modern appearance.
Its polished band curves around the stone in a flowing, open design and makes the ring comfortable to wear every day and easy to combine with other fine jewelry.
Specifications
Collection: Royal Coster Diamonds
Product type: Ring
Material: 18K white gold
Number of tourmalines: 1
Tourmaline weight: 0.55 carat
Total gemstone weight: 0.55 carat
Setting: Prong-set, open bypass design
Ring sizes: 47 to 62
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 piece 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 tourmaline over time.
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 Weight
Carat weight is a unit measurement used for a diamonds weight, where 1 carat = 0.2 grams. Points can also be used whereby 1 carat = 100 points. Because larger diamonds are rarer, they generally have a higher price per carat.
Cut
The cut of a diamond equals the overall shape of the stone. A good diamond worker can cut a diamond in almost every shape imaginable. In the end the shape of a diamond you select is a matter of personal preference.
Clarity
Clarity equals the purity of a diamond,this can vary from flawless (zero imperfections) to blemishes (a lot of imperfections). These imperfections, like fractures, are tiny parts of carbon or air bubbles. A natural diamond is rarely without perfections.
Color
The color of a diamond relates directly to a diamond’s value. This color can vary a lot, from white to yellow/brown. The diamond’s color can be graded from a scale that begins with D, then progress down the alphabet with each letter designating.

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The most trusted diamond house since 1840.
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