Chatham Lab-Created Square Cushion Cut Rubies

We will price match any legitimate Chatham retailer

Rubies and sapphires both belong to the gem species corundum. It is the presence of the trace mineral chromium that gives rubies their rich red color. Rated 9 on the Mohs scale of hardness, Chatham rubies are very durable, making them ideal for use in jewelry.

Eco-Friendly Chatham lab-created rubies are not fakes, rather they are REAL rubies grown in a laboratory in the natural crystal habit of mined rubies. With Chatham, you get top quality, top color rubies for a fraction of the price of natural rubies. For more information about Chatham square cushion rubies, select your perfect ruby below.

Get personalized service with one of our staff GIA-trained graduate gemologists

Can’t find the square cushion ruby you’re looking for below or do you need a custom cut stone? We offer you one-on-one attention to answer questions so you can order just the right ruby at an exceptional price. Need a special mounting for your square cushion cut ruby? Select from our offering of ruby engagement rings here or work with our design consultant to create your perfect engagement ring or jewelry piece. Simply call us and we’ll be happy to assist you, 970-535-4139.

Pictures not actual size. Ruby is denser than diamond, so it weighs more for the same physical size. Because carat is a measurement of weight, not size, it’s important to order colored stones based on physical size rather than carat weight.