Posted inGemstones Semi-Precious Gemstones Tourmaline
Red Tourmaline (Rubellite): Color, Value, and Buying Guide
Red tourmaline is sold under the trade name rubellite. The best stones are a vivid, medium-to-dark red or…
Posted inGemstones Buying Guides Learn
Indicolite Tourmaline: Blue Color and Buying Guide
Indicolite is the trade name for blue tourmaline. It is a color variety of tourmaline, not a separate…
Posted inGemstones Buying Guides Learn
Maine Tourmaline: History, Colors, and Jewelry Guide
Maine tourmaline is gem tourmaline from pegmatite pockets in western and southern Maine, where tourmaline is the state…
Posted inGemstones Buying Guides Learn
Green Tourmaline: Color, Value, and How to Buy
Green tourmaline is a durable gemstone, with a hardness of 7 to 7.5, that gem dealers call verdelite…
Posted inGemstones Buying Guides Learn
Tanzanite Guide: Color, Treatment, and Is It “1000x Rarer”?
Tanzanite is the blue-violet variety of zoisite, found in commercial quantity in exactly one place on Earth the…
Posted inGemstones Buying Guides Learn
How to Tell If a Ruby Is Real: 6 Reliable Tests
A real ruby is genuine corundum colored by chromium, but "real" actually covers four different categories: natural, treated,…
Posted inSemi-Precious Gemstones Gemstones Learn
Jade Gemstone: 8 Facts That Explain Why Not All “Jade” Is the Same
"Jade" isn't actually one mineral, it's a shared common name for two chemically and structurally different minerals, jadeite…
Posted inGemstones Buying Guides Emerald
Emerald Gemstone: 8 Facts Every May Birthstone Lover Should Know
If you are shopping for a May birthday or seeking the ultimate green gemstone to mark a traditional…
Posted inGemstones Buying Guides Learn
Does Moissanite Get Cloudy? Separating Three Different Questions
Search this question and you'll find the same answer repeated across dozens of jewelry retailer blogs, almost word…
Color Change Sapphire: History, Mystery & True Colors
If you own an old piece of jewelry with a stone that flips from blue-grey to purple depending…
