Brilliant Lab-Grown Sapphires by Chatham – Timeless & Ethical

Lab-Grown Sapphire

Carroll Chatham’s first blue sapphire was grown in 1975. His original production grew from the seed crystal of a Ceylon sapphire, known for their magnificent hue.

Blue sapphire is the most difficult gem crystal that Chatham grows. Color in sapphire often follows the crystal structure in color zones. Even the best sapphire crystal has different shades of blue in it. That’s why Chatham lab-grown sapphires come in three lovely shades of blue, not just one.

Chatham lab-grown blue sapphire is one of Chatham's bestselling colors. Maybe that's because blue is America's favorite color, making it a popular choice for those seeking high-quality and responsibly sourced gemstones.

SHOP LOOSE LAB-GROWN SAPPHIRE

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.

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Book an Appointment

Custom Design Inquiries

The Chatham Standard

Quality That Matters

Color

Chatham lab-grown blue sapphire displays a rich blue to violet-ish blue, ranging from light to dark. Medium is considered the most sought after tone.

Chatham lab-grown sapphire is offered in light, medium, and dark.

Clarity

The standard clarity grade at Chatham is Gem Quality. That means our gems are free of any eye-visible inclusions. But Chatham takes it a step further—we cut away about 80% of the rough crystal to deliver pure and flawless gemstones.

Cut

Each lab grown gemstone is carefully hand-cut and rigorously inspected before reaching your hands. Chatham uses a mix of brilliant and step faceting styles, depending on the shape, to maximize brilliance and color uniformity.

Sapphire Shades

Since color in sapphire often follows the crystal structure in color zones, blue sapphire is very difficult to grow. Even the best sapphires have different shades of blue which is why Chatham offers lab-grown sapphires in light, medium, and dark blue.

The Gemstone Profile

Key Traits and Facts

Mineral

Chatham lab-grown blue sapphire comes from the Corundum mineral group.

Hardness

Scoring a 9 on the Mohs Scale, sapphires are the second-hardest gemstone making them exceptionally durable for everyday wear.

Birthstone Month

Sapphires are birthstones to the most common birth month: September!

Color Lore

Sapphire is best known for its deep, vivid blue color, symbolizing wisdom, loyalty, and trust.

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An Array of Shapes

Chatham offers lab-grown sapphire 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 sapphire is most commonly preferred in round, oval, pear and emerald cut.

CUSTOM DESIGN INQUIRIES

Chatham Lab-Grown Gemstones

Chatham grows a kaleidoscope of gemstones. For a closer look, click each lab-grown gem below to learn more about it’s beauty, quality, and color possibilities.