gemstone

Opal-like cabochon ring stone

Likely common opal (hydrated amorphous silica, SiO₂·nH₂O); exact material uncertain from the photograph

AI-generated identification · may be incorrect

Pale blue-white, translucent cabochon with pearly/vitreous luster and apparent play-of-color. Opal hardness is about 5–6.5 Mohs, has no cleavage, and is amorphous rather than crystalline; the surrounding setting appears silver-colored metal with clear accent stones.

Identified September 7, 2026More gemstone →

Explore Opal-like cabochon ring stone in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

At a glance

Common name: Opal-like cabochon ring stone
Scientific name: Likely common opal (hydrated amorphous silica, SiO₂·nH₂O); exact material uncertain from the photograph
Category: gemstone
Identified: September 7, 2026
Method: Standard

AI Estimated Value

Approximately $10–$100 for a common or synthetic opal ring stone; $100–$1,000+ for confirmed fine natural precious opal, with total ring value dependent on metal and accent stones.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Opal forms when silica-rich groundwater deposits hydrated silica in cavities and fractures, generally at low temperature. The stone is mounted and polished, so its natural locality and geological age cannot be determined; possible sources include Australia, Ethiopia, Mexico, or India.

Uses & applications

Used primarily in jewelry and collecting. The ring itself may have considerably more value than the loose stone, depending on the metal and accent stones.

Geological facts

The image does not clearly show the characteristic broad spectral flashes of precious opal; it could instead be common opal, synthetic opal, or another pale cabochon such as moonstone or glass.

Field identification & locations

Check with a loupe for a natural irregular color pattern, play-of-color, and inclusions; inspect for bubbles or a columnar ‘snake-skin’ pattern suggesting glass or synthetic opal. A refractive-index, specific-gravity, and thermal/conductivity test by a gemologist is needed for confirmation. The Kerala region near 11°N, 75.9°E does not strongly establish an opal locality.