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.

Products & Collections

Chatham Lab Grown Sapphire Bracelet Chatham Lab Grown Sapphire Bracelet
14K White Gold Bracelet featuring a 5.10 carat Pear Chatham Lab-Grown Blue Sapphire, from Chatham’s Color Fashion Collection.
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Chatham Lab Grown Sapphire Earrings Chatham Lab Grown Sapphire Earrings
14K White Gold Earrings set with Chatham Lab Grown Blue Sapphire Onion Cuts from Chatham’s Color Fashion Collection.
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Chatham Lab Grown Ruby Pendant Chatham Lab Grown Ruby Pendant
14K White Gold Pendant featuring a 3.0 carat Onion Cut Chatham Lab Grown Ruby, from the Color Fashion Collection.
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Chatham Lab Gown Emerald Ring Chatham Lab Gown Emerald Ring
14K White Gold Ring featuring a 1.70 carat Pear Chatham Lab Grown Emerald, from the Color Fashion Collection.
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Chatham Lab Grown Diamond Hoops Chatham Lab Grown Diamond Hoops
14K Yellow Gold Fashion Hoops in varying sizes featuring Chatham’s lab grown diamonds: Small 22mm, Medium 28mm and Large 36mm.  
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Chatham Lab Grown Diamond Pendant Chatham Lab Grown Diamond Pendant
14K White Gold Pendant featuring a single Chatham lab grown diamond, 0.40cts.
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Chatham Lab Grown Diamond Pendant Chatham Lab Grown Diamond Pendant
14K gold clock pendant from Chatham’s Timeless Collection, featuring all lab grown diamonds.
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Chatham Lab Grown Diamond Ring Chatham Lab Grown Diamond Ring
14K Yellow Gold Ring featuring Chatham’s lab grown diamonds, from the Diamond Fashion Collection.
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Contact

San Marcos, CA USA
  • Monica McDaniel
  • 300 Rancheros Drive
    Suite 375
  • San Marcos, CA 92069
  • Phone: 800-222-2002
  • Email

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