Emerald Ring – Octagon, 18K White Gold, 10x8mm

Today, Chatham uses multiple advanced growth methods, including hydrothermal, flux, and a range of proprietary processes. These techniques are designed to closely replicate the natural geological conditions under which gemstones form. Growth occurs over a period of about 12 months resulting in exceptional quality gemstones.

Unlike faster mass-production growth methods that produce stones in a fraction of the time, Chatham's extended growth process prioritizes crystal integrity, depth of color, and natural formation characteristics. As a result, Chatham lab-grown gemstones develop more fully, much like it would in nature.

Chatham pioneered gemstone growth decades before lab-grown jewelry became mainstream. Today, Chatham remains the leader in lab-grown gemstones through an uncompromising commitment to quality, craftsmanship, and color mastery. We sacrifice nearly 80% of the original rough during cutting to reveal only the finest material. This ensures exceptional color saturation, clarity, and brilliance in every gemstone.

Combined with the industry's most extensive assortment of lab-grown gemstone colors—surpassing any other grower in range, consistency, and beauty—Chatham continues to set the benchmark for premium lab-grown color gemstones.

Yes, Chatham provides a lifetime guarantee on all lab-grown colored gemstones. Customers can trust that Chatham's lab-grown gems will retain their color and crystal structure permanently under normal wear. However, if your Chatham lab-grown color gemstone should chip or break under normal circumstances, Chatham will repair or replace it at no charge to the customer.

Chatham's commitment to quality through its lifetime warranty ensures peace of mind, trusted value, and reassurance that the gemstone marking the most meaningful moments will remain as vibrant and significant as the day it was chosen.

Chatham offers 30-day returns for jewelry. Items must be returned in original, unworn condition and free from any damage, alteration, sizing, repair work, or signs of use.

Please contact us at sales@chatham.com to receive a return authorization number to put on the outside of the return package. All returns are subject to review before approval. Shipping fees not included.