sapphire

Both natural and synthetic rubies fluoresce under UV light. Learn how slight differences in fluorescence patterns can help gemologists distinguish…

We offer a wide range of facet grade rough from locations worldwide, most of which is untreated. Stock is kept location specific eg sapphire –…

For centuries, people have adorned themselves with red gemstones. Red has had strong symbolic associations with love, passion, fire, and blood,…

“3.03ct Oval Ruby,” Winza, Tanzania, purplish red. © All That Glitters. Used with permission. Ruby stands as the ultimate symbol of luxury…

Rubies are a traditional choice for an engagement ring stone. These colored gemstones represent romance, wealth, and success, a trifecta worth…

Rubies are among the rarest and most highly prized gemstones. Between nuances in color and the proliferation of treatments, appraising rubies…

Prior to 2006, most lead glass filled rubies contained only a very small percentage of glass in surface-reaching fractures to improve clarity.…

If you deal in expensive gemstones, you should invest in some simple ruby and sapphire grading tools. To attract customers and keep them happy,…

Question: Has anyone ever heard of Serengeti rubies? We bought two. The seller told us they were new to the US. Each is about 1 carat and a 7 × 5.3…