sapphire

…example, Montana sapphires can command higher prices than similar stones with different origins. If you’re paying extra for one of…

Spinel has played an important part in gem history. Prior to the last century, it was impossible to distinguish from ruby and sapphire once it was…

…or to identify cobalt-doped glass in sapphire. Color Filter Sets Numerous other color filters, often called Hanneman filters, can help you…

…going to serve a specific market, i.e. just people who want corundum, or offer a mix of different minerals. Sapphire rough, Rock Creek, Montana.…

“Sapphire,” 0.81 cts, fancy Barion Superman cut, Montana. © Dan Stair Custom Gemstones. Used with permission. Editor’s…

…beginning to see and hear of new production coming out of Africa as well as other places. There is a new Spessertite mine and a new Sapphire find…

…purchase. Synthetic Sapphire Most commonly, synthetic color-change sapphire gems are passed off as alexandrites. These specimens contain…

…including a rude form of faceting, had its origins in that country. It goes without saying that the more famous transparent gems, ruby, sapphire…

…naked eye while offering great value. Consider getting a sapphire or spinel for your engagement ring, instead. 🙂 “The Ring!,”…