Day: October 29, 2025

Spodumene: Geology, Varieties, Grading & Global Localities

kunzite mineral

Spodumene is a lithium-rich pyroxene that hosts three beloved gem varieties—kunzite (pink-violet), hiddenite (green), and triphane (yellow). Learn how it forms in LCT pegmatites, what drives color (Mn vs. Cr), why it’s tricky to cut (perfect cleavage), how treatments and light affect color, and where the finest gems are found.

Four Peaks Amethyst: Arizona’s High-Altitude Heir to the Siberian Legacy

4 peaks amethyst point

High in Arizona’s Mazatzal Mountains, the Four Peaks Mine yields amethyst of deep violet with red flash, helicopter-only access, and truly limited output. Learn its discovery story, ownership history, geology, and why these rare crystals — especially intact clusters — are prized by collectors worldwide.