Rose Quartz vs Pink Calcite: How to Tell Them Apart
Compare rose quartz and pink calcite by hardness, cleavage, luster, translucency, texture, and safe care.
Read guide →Browse the reference library
Crystal Guides
Explore crystal identification, look-alike comparisons, mineral varieties, and practical care. Each guide explains what visual clues can tell you and when professional testing is needed.
New to identification? Start with the crystal identification chart or our non-destructive identification guide.
Can Amethyst Go in Water? A Practical Care Guide
Learn when brief water contact is acceptable for amethyst and when settings, fractures, dyes, heat, or unknown treatments require caution.
Read guide →How to Identify Amethyst Without a Scratch Test
Use color zoning, quartz crystal habit, luster, inclusions, and comparison stones to identify likely amethyst without damage.
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