Crystal Treatment Awareness Guide

Treatment isn't automatically bad. Hiding treatment is the ethical line. This guide helps you understand which crystals are commonly treated in the market, what to ask sellers, and how to make informed purchases.

13 crystals with high treatment risk

6 crystals with moderate treatment risk

105 crystals with low treatment risk

High Treatment Risk Crystals

These crystals are frequently treated, dyed, or enhanced in the market. Always ask about treatments before purchasing.

Moderate Treatment Risk Crystals

Some treatment occurs in the market for these crystals. Worth asking about, especially for higher-priced pieces.

Apatite Occasional – heat reported (gem trade); stabilization Uncommon; Frequency Varies Clear Quartz Occasional – coatings (vapor deposition/aura), crackle + dye (decor); Frequency Varies Opal Occasional – smoke/sugar or impregnation; Est.. 10–30% Smoky Amethyst Occasional – irradiation; Est.. 20–50% Smoky Quartz Occasional – irradiation (esp. to deepen); Est.. 20–50% White Opal Occasional – smoke/sugar or impregnation; Est.. 10–30%

Low Treatment Risk Crystals

These crystals are rarely treated. Most material on the market is natural.

African Bloodstone (Heliotrope) Amazonite Amethyst Ametrine Angelite Anhydrite Apache Tears Aragonite Aventurine Azurite Banded Amethyst Black Jade Black Kyanite Black Moonstone Black Obsidian Black Tourmaline Black Tourmaline in Quartz Bloodstone Blue Calcite Blue Kyanite Blue Lace Agate Blue Opal Blue Rose Quartz Brown Aragonite Bumblebee Jasper Cactus (Spirit) Quartz Amethyst Calcite Celestite Chevron Amethyst Chlorite Quartz Chocolate Calcite Chrysocolla Chrysoprase Cobalt Calcite Dendritic Opal Diopside Dioptase Dragon Bloodstone Earth Moonstone Epidote Fire Quartz Fluorite Fuchsite Garnet Golden Healer Green Nephrite Jade Green Tourmaline Hematite Honey Calcite Hyalite Opal Included Quartz (Lodolite) Iolite Jasper Kambaba Jasper Kyanite Labradorite Larimar Lazulite Lemurian Quartz Leopard Skin Jasper Lepidolite Lithium Quartz Malachite Mangano Calcite Mookaite Jasper Moonstone Nontronite Obsidian Ocean Jasper Orange Calcite Peach Aragonite Peach Moonstone Peridot Petrified Wood Phantom Amethyst Pink Opal Pink Rose Quartz Pink Tourmaline Prehnite Purpurite Quartz Rainbow Obsidian Red Aragonite Red Jasper Red Rose Quartz Rhodochrosite Rhodonite Rose Quartz Rutilated Quartz (Rutile) Selenite Septarian Serpentine Shattuckite Shungite Snow Quartz Snowflake Obsidian Sodalite Stichtite Sunstone Tangerine Quartz Tiger Eye Tourmaline Unakite Watermelon Tourmaline Yellow Jasper

What to Ask Your Seller

Good sellers welcome these questions. If they can't or won't answer, that tells you something too.

"Has this been treated, dyed, heated, or coated in any way?"
"Where was this sourced from?" (Country is fine; mine-level may not always be available or safe to share)
"Is this natural or lab-created?"
"Are these the stone's natural colors?"

At Beyond Bohemian, we disclose all known treatments and share sourcing details on every product. Because you deserve to know what you're buying.