Mineral variety Healing crystal

Chocolate Opal

✦ Stone of Earthy Comfort ✦

Crystal lore: 🌳 Grounding 🌿 Healing 🌊 Calm

Variety of Opal.

Chocolate Opal specimen — Opal banded.jpg · Wikimedia Commons (see file page for author & license) · photo of parent mineral

📜 Key facts

Age	Varies
Origin & sources	Ethiopia (Shewa) and Mezezo; some brown common opal occurs elsewhere.
Composition	Opal with a brown body. Ethiopian chocolate opal is often smoked or dyed, so ask about treatment. Opal is hydrated amorphous silica (SiO₂·nH₂O), Mohs 5.5–6.5.

How it forms

Silica-rich water seeped into cracks, cavities and fossils, then slowly evaporated. Tiny silica spheres settled out. In precious opal they are stacked in a neat, regular grid that diffracts light into play-of-colour. In common opal they are jumbled.

Mineral data: see Opal.

🌍 Where it's found

Type locality
Notable source / deposit
Country of origin

Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.

✨ Metaphysical & Folklore

These are traditional and folk beliefs from crystal lore. They are not scientific or medical claims – crystals are not a substitute for professional care.

Brown-bodied 'chocolate' opal is linked in lore to grounding and warmth.