Russian hematite

Hematite Mineral: A Classic Iron Oxide Explained

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Amethyst, February birthstone, purple quartz crystals

7 Stones To Relieve Stress

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amethyst crystal specimen

Amethyst Meaning & Uses

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amethyst cut using the faceting pattern called dianes oval

Faceting Focus: Diane’s Oval

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mica sample

Mica: A Shimmering Sheet Mineral

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calcite is identified in this keokuk geode

A Calcite Identification Guide

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orthoclase feldspar minerals specimen

Feldspar Minerals: Rock Forming Basics

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feldspar quartz found while rockhounding Utah

Rockhounding Utah: Skyline Drive Minerals

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Alexandrite: The Chameleon Gemstone

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california magnesite plasma agate specimen

California Magnesite Plasma Agate: What to Cut

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