Questions & Answers
Our trusted network of 1stDibs sellers answer common questions
How can you tell the quality of a diamond?
1 Answer

To tell the quality of a diamond, experts traditionally consult the 4Cs. Developed by the Gemological Institute of America (GIA), the 4Cs are color, clarity, cut and carat weight. You can visit the official GIA website to learn more about the ratings for color, clarity, cut and carat weight. If you're attempting to evaluate the quality of a diamond already in your possession, seek the advice of a certified appraiser or expert jeweler. Find a diverse assortment of diamond jewelry on 1stDibs.
1stDibs ExpertFebruary 27, 2024
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Shop for Diamond Jewelry on 1stDibs
Marquise Ruby (10ctw) and Diamond (5ctw) Bracelet 14K Yellow Gold
Located in Dallas, TX
Ruby and Diamond Bracelet in 14K Yellow Gold. The bracelet features approximately 10ctw of marquise cut rubies and 5ctw of marquise cut diamonds. The bracelet measures 7 inches in le...
Category
Vintage 1980s Tennis Bracelets
Materials
Diamond, Ruby, 14k Gold, Yellow Gold
$8,400 Sale Price
30% Off
Free Shipping
18K Gold 0.50ct Deep Red Ruby & 0.18ct Diamond Classic Sunburst Pendant Enhancer
Located in เกาะสมุย, TH
A beautiful and quality cocktail pendant enhancer. This beautiful piece is crafted in our workshop using 18K solid yellow gold and the front coated with white gold. The piece is ador...
Category
20th Century Thai Necklace Enhancers
Materials
Diamond, Ruby, 18k Gold, White Gold
Vintage 18ct Gold, Opal & Diamond Round Cluster Ring, Hallmarked London 1970
Located in Brighton, GB
Vintage Opal Cluster Ring
18ct Gold
Hallmarked London 1970
Step back in time with this exquisite vintage 1970s cluster ring, a true statement piece that captures the elegance of...
Category
Late 20th Century English Engagement Rings
Materials
Diamond, Opal, Gold, 18k Gold
Antique 9ct Gold, Edwardian Amethyst, Peridot & Diamond Carved Suffragette Ring
Located in Brighton, GB
Antique Suffragette Ring
9ct Gold
This stunning 9ct yellow gold Edwardian era suffragette ring is a true testament to craftsmanship and history. The ring features a captivating a...
Category
Early 20th Century English Edwardian Engagement Rings
Materials
Amethyst, Diamond, Peridot, Gold, 9k Gold
Antique 18ct Gold & Platinum, 1920s Original Art Deco Sapphire and Diamond Ring
Located in Brighton, GB
Sapphire Art Deco Ring
18ct Gold & Platinum Stamped
Circa 1920s
This is a truly stunning original Art Deco ring, crafted from 18ct gold and platinum. The fan-shaped design is fa...
Category
Early 20th Century European Art Deco Engagement Rings
Materials
Sapphire, Diamond, Platinum, 18k Gold, Gold
TIFFANY & Co. Jean Schlumberger 18K Gold Sixteen Stone Diamond X Ring 6.5
Located in Los Angeles, CA
TIFFANY & Co. Jean Schlumberger 18K Gold Sixteen Stone Diamond X Ring 6.5
Sixteen Stone by Tiffany is an expression of love’s nurturing forces. Conceived by legendary designer Jean ...
Category
2010s American Band Rings
Materials
Diamond, Platinum, 18k Gold