Obsidian is not a mineral. It is volcanic glass: lava that cooled so quickly that no crystals had time to form. That is why a polished obsidian stone has the depth of glass rather than the sparkle of a gem.
Why it is black
Iron and magnesium in the lava give obsidian its colour. Most is deep black; some pieces show a silver or rainbow sheen when tilted, caused by microscopic gas bubbles trapped in the glass. Snowflake obsidian carries pale grey patches of cristobalite.
What it is traditionally worn for
Across many cultures obsidian is the stone of protection and grounding — worn to keep a clear head and to deflect what is not wanted. Historically it was more practical than symbolic: obsidian breaks with an edge sharper than a surgical blade, and was used for tools and mirrors long before it was set in rings.
Wearing an obsidian ring
Obsidian sits at about 5 to 5.5 on the Mohs scale — softer than quartz, which means everyday dust can scratch it over the years. It is also glass, so a hard knock against stone or metal can chip it. Take the ring off before the gym, before lifting anything heavy, and before working with your hands.
Cleaning
Warm water, a drop of washing-up liquid, a soft brush around the setting, then dry it completely. No ultrasonic cleaner, no steam, no sudden temperature change — glass does not like thermal shock. A silver polishing cloth is fine on the band as long as you keep it off the stone.
How to tell natural obsidian from glass imitation
- Natural obsidian is rarely perfectly uniform: look for faint flow lines or tiny bubbles under a light.
- It feels cool and slightly heavier than plastic, lighter than most minerals.
- An imitation moulded in glass often shows a seam line at the edge of the stone.
Our obsidian rings are set in solid 925 sterling silver and finished by hand, so the bezel that holds the stone is shaped individually around each piece.
Pieces from our collection related to this guide
- Natural Obsidian Stone Ring, 925 Sterling Silver Ring, Bird Ring
- 925 Sterling Silver Handmade Men's Ring - Available with Various Natural Stones
- Natural Obsidian Stone Ring - 925 Sterling Silver Ring
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- Falcon Jewelry KAMBO Handmade 925 Sterling Silver Men's Adjustable Scorpion Ring
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- Falcon Jewelry KAMBO Handmade 925 Sterling Silver Obsidian Ring for Men, Adjustable
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- Natural Obsidian Gemstone Ring - Silver Men's Sultan Ring
- 925 Sterling Silver Islamic Mosque Onyx Stone Men's Ring
- 925 Sterling Silver Women's Ring - Elegant Halo Design with Stone (Created Obsidian)
- 925 Sterling Silver Ring - Onyx Stone Handmade Ring
- 925 Sterling Silver Men's Ring with Natural Obsidian
- 925 Sterling Silver Sailor Ring, Natural Onyx Stone
- 925 Sterling Silver Men's Ring with Obsidian and Ayetel Kursi
- 925 Sterling Silver Men's Ring with Natural Onyx Stone - Handmade Minimalist Vintage
- Natural Obsidian Gemstone Signet Ring for Men, Handmade 925 Sterling Silver
- 925 Sterling Silver Men's Ring, with Natural Onyx Stone
- Natural Obsidian Gemstone Ring - 925 Sterling Silver Ring
- Nautical Anchor Silver Ring, 925 Sterling Silver Ring, Cabochon Onyx Stone Ring
- Natural Obsidian Precious Stone Ring - 925 Sterling Silver Ring
- Natural Onyx Stone Ring - 925 Sterling Silver Men's Ring (Model-2)
- Master Mason Ring - 925 Sterling Silver, Gold Plated Black Obsidian, Mason Symbol
- Natural Onyx Stone Ring (Model-4)
- 925 Sterling Silver Men's Ring - Real Natural Obsidian Stone
- Natural Onyx Stone Ring (Model-2)
- Natural Obsidian Gemstone Ring, Handcrafted Ring, Silver Ring, Black
- Natural Onyx Stone Ring (Model-3)