Opal Price Calculator
Calculate opal values based on type, body tone, play-of-color quality, and origin for all major opal varieties.
Opal Price Estimator
Estimate the value of an opal based on its key characteristics.
Opal Type Comparison
Compare prices across all major opal types at the same carat weight.
Opal Jewelry Total Cost
Estimate the complete cost of an opal jewelry piece including setting.
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Frequently Asked Questions
How much is opal worth per carat?
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Understanding Opal Values
Opals are among the most visually stunning gemstones, prized for their unique play-of-color that creates shifting rainbow patterns within the stone. Unlike other gemstones graded primarily on clarity and color, opals are valued for the intensity, pattern, and color range of their internal light display. This makes opal valuation more subjective and requires understanding the specific factors that drive prices for each opal variety.
Types and Their Value Ranges
Black opals from Lightning Ridge, NSW, Australia, reign supreme in the opal world. Their dark body tone provides maximum contrast for the play-of-color, creating the most dramatic visual effect. Fine black opals displaying red fire are the pinnacle of opal value, with exceptional specimens selling for over $15,000 per carat at major auction houses.
Body tone, play-of-color intensity, pattern regularity, and the presence of red fire are the primary value factors. Opals displaying all spectral colors with dominant red play-of-color in a broad, regular pattern command the highest premiums. Protective bezel settings are recommended for opal jewelry, as the stone is relatively soft (5.5-6.5 Mohs) and can be damaged by impact or extreme temperature changes.