Gemstones & Birthstones
How to Evaluate Turquoise Quality: Color, Matrix & What Separates Fine from Average
What makes a fine turquoise: an even, saturated sky blue, attractive matrix, a dense, well-finished texture, and honest disclosure of any...
The Oath Journal
Gemstones & Birthstones
What makes a fine turquoise: an even, saturated sky blue, attractive matrix, a dense, well-finished texture, and honest disclosure of any...
Gemstones & Birthstones
Genuine turquoise is a porous copper-aluminum phosphate, usually stabilized. Learn how matrix, hardness, and a dye test reveal real stone...
Gemstones & Birthstones
Turquoise is the birthstone for December, with tanzanite and zircon as alternates. Its meaning, colors, hardness, and how to care for tur...
Gemstones & Birthstones
Read turquoise color and matrix first, then ask about treatment: most stones are stabilized, natural turquoise is rarer, and dyed howlite...