Mineral: Corundum | Hardness: 9 | Birthstone Month: July | Anniversary: 15th & 40th
Twenty two years after the growth of emerald, Carroll Chatham grew his second gemstone: Ruby.
In 1958, Chatham revolutionized the industry yet again with lab grown ruby. Chatham's ruby creation is a vivid red, ranging from a deep, rich crimson to a bright, fiery red. These gemstones exhibit excellent clarity and brilliance, completely free of any color treatments to enhance its beauty.
For the bold and daring, Chatham lab-grown ruby offers a responsible and more affordable option to mined rubies, while maintaining the same physical, chemical, and optical properties.

Chatham’s loose stone category is exclusively wholesale. We will gladly connect you with one of our Authorized Gemstone Retailers through our Concierge Service, or you can visit our Store Locator for a retailer near you. For a truly customized Chatham experience, book a virtual appointment with one of our expert team members, to ensure we fulfill your expectations.

Chatham lab-grown ruby exhibits a deep pinkish, red in a medium tone with vivid saturation.
The standard clarity grade at Chatham is Gem Quality. That means they are free of any eye-visible inclusions.
Chatham lab-grown ruby is essentially flawless, with zero treatments to enhance its appearance.


Chatham maintains rigorous quality control standards to ensure that each lab grown gemstone meets our high-quality benchmarks.
Chatham lab grown rubies are hand cut and polished to high standards, ensuring they exhibit maximum brilliance and color saturation.
Chatham offers lab-grown ruby in a range of popular shapes cut to calibrated sizes. We are also able to accommodate custom cut orders in any size and shape, within reason.
Chatham lab-grown ruby is most popular in rounds, ovals and pears. Our signature flame cut is the most popular in the Chatham jewelry collection.

Visit our Ruby blog to learn more about what makes rubies so desirable.
Chatham grows a kaleidoscope of gemstones. For a closer look, click each lab-grown stone to learn more about it’s beauty, quality and color possibilities.

Chatham is the exclusive distributor of Chatham lab grown gemstones. If you are a retailer interested in creating an account, please click here to complete our form. Someone will be in touch shortly with your account details.
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