Mineral: Spinel | Hardness: 8 | Birthstone Month: August | Anniversary: 22nd
Chatham has successfully captured the captivating color of the highly desirable Paraíba tourmaline, through an advanced method that replicates the mined formation conditions of spinel.
Tourmaline's crystal structure is complex and unsuitable to grow in a laboratory. Spinel, on the other hand, has a simpler crystal structure and offers many color possibilities. Chatham lab-grown Paraiba colored spinel is a more affordable alternative to the vibrant and rare tourmaline, with its striking blue-green color reminiscent of tropical waters.

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 Paraiba colored spinel is a transparent stone ranging from a intense greenish blue (left) to a vivid, bluish green (right). The range depends on which is more dominant: the blue or the green.
Chatham lab-grown Paraiba colored spinel is available in a sky blue or true hue.
The standard clarity grade at Chatham is Gem Quality. That means the gems are free of any eye-visible inclusions.
Chatham lab-grown Paraíba colored spinel is essentially flawless.


Chatham maintains rigorous quality control standards to ensure that each lab-grown gemstone meets our high-quality benchmarks.
Chatham lab-grown Paraíba colored spinel is faceted to optimize light reflection and refraction, maximizing the stone's color and brilliance.
Chatham offers lab-grown Paraíba colored spinel 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 Paraíba colored spinels are most commonly preferred in ovals, antique cushions, and pear shapes.

Visit our Paraiba-Colored Spinel Blog to learn more about what makes spinel so desirable.
Chatham grows a kaleidoscope of gemstones. For a closer look, click each lab grown gem 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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