Fake Opal
A variety of Opal
What is Fake Opal?
A fake Opal is a manufactured material that imitates natural Opal. It is created using synthetic opal, plastic, or glass and comes in different colors and patterns. Unlike a natural opal, a fake Opal is stable over time and won't crack or turn yellow, which makes it low maintenance. Additionally, it is easier and cheaper to manufacture than a natural Opal.
Optical Properties
- Refractive Index
- 1.37-1.52
- Pleochroism
- None
- Optical Character
- Isotropic
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Fake Opal before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Where to Find Fake Opal
Fake Opal is a variety of Opal. RockHoundR, the free-to-download rockhounding map from the Ruby Glint team, shows where collectors find opal in the US, with land-access notes for BLM land and national forests. Collecting is banned in national parks.
See where to find opalAlways check the local rules and get the landowner's permission before you collect.
Quick Facts
Physical Properties
- Color
- Colourless, white, blue, orange, yellow, brown, red, green
- Streak
- White
- Luster
- Vitreous, Resinous, Waxy
Chemical Properties
- Chemical Formula
- SiO2 · nH2O
- Elements
- H, O, Si
Also Known As
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Fake Opal FAQs
How do I identify Fake Opal?
Fake Opal can be identified by its Colourless color, Vitreous, Resinous, Waxy luster. Look for these key characteristics when examining specimens.
What color is Fake Opal?
Fake Opal typically appears in Colourless, white, blue, orange, yellow, brown, red, green. Color can vary depending on impurities and formation conditions.
