In the 1920s, a boy with a dream to grow diamonds began the historic experiments that would launch the world’s leading lab-grown gemstone company.
After many years of research, Carroll Chatham, a young chemist in San Francisco, discovered the secret of growing emerald crystals. By duplicating the conditions deep within the Earth: temperatures, pressures and chemical makeup, his laboratory succeeded in growing gemstones over the course of a year’s time.
These gemstones possess the same physical, optical, and chemical structure as their mined counterparts.
Today, Chatham is the world’s leader in lab-grown gemstones, creating the finest quality sapphires, emeralds, rubies, diamonds and a rainbow of other gems set in unique jewelry designs that are always stylish and never mined. We are one of the few vertically integrated brands in the industry, which allows us to offer exceptional quality and value. That’s why more people choose Chatham than any other lab-grown gem.
Our complete line of jewelry includes color fashion, bridal, diamond fashion and initial pendants, as well as a variety of loose lab-grown diamonds up to around 5 carats. But no matter how beautiful the product, it’s the brand partnership that really drives sales and profits.
Chatham supports retailers with a comprehensive marketing strategy aimed at communicating the brand effectively to the consumer. Through progressive thinking and innovation, Chatham has developed programs intended to generate sales and ensure our retail partners success.
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300 Rancheros Drive
San Marcos, CA 92069
Chatham Lab-Grown Blue Sapphire Bar Necklace
14K White Gold Bar Pendant featuring a 2 .45 carat Baguette Chatham Lab-Grown Blue Sapphire, from Chatham’s Bar Collection.
Chatham Lab-Grown Ruby Statement Necklace
14K White Gold Necklace featuring a 5.25 carat Round Chatham Lab-Grown Ruby, from Chatham’s Millennium Collection.
Chatham Lab-Grown Emerald Ring
14K White Gold Ring featuring a 2 carat Onion Shape Chatham Lab-Grown Emerald, from Chatham’s Color Fashion Collection.
Chatham Lab-Grown Diamond Anniversary Pendant
14KWY Gold Anniversary Pendant featuring Chatham Lab-Grown Diamonds, 0.41 ctw, from Chatham’s Diamond Fashion Collection. Celebrate your 1st or 10th Anniversary.
Chatham Lab-Grown Diamond Cuff
14K Yellow Gold Cuff Bracelet featuring Chatham Lab-Grown Diamonds, 0.84 ctw, D, E, F / VVS quality, from Chatham’s Diamond Fashion Collection.
Chatham Lab-Grown Diamond Pendant
14K White Gold Pendant featuring Chatham Lab-Grown Diamonds, 3.91 ctw, D, E, F / VVS quality hung by black German silk rope, from Chatham’s Diamond Fashion Collection.
Chatham Lab-Grown Diamond Earrings
14K White Gold Earrings featuring Chatham Lab-Grown Diamonds, 1.60 ctw, D, E, F / VVS quality, from Chatham’s Diamond Fashion Collection.
Chatham Lab-Grown Diamond Engagement Ring
14K White Gold Engagment Ring featuring a 1 carat Round Brilliant Chatham Lab-Grown Diamond with Half Moon Chatham Lab-Grown Blue Sapphire accents, from Chatham’s Eternal Flame Collection.