Star Sapphire Value, Price, and Jewelry Information
Star sapphire is a type of sapphire that displays asterism, a star-like optical effect.
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for full access to our price guide (updated monthly).Star Sapphire Value
Kashmir Sapphire
Certified origin. Untreated material. Average brilliancy of 40 to 60%. Add to 20% or deduct to 10% for other cutting. Prices for ovals and cushions. Add 8% to 10% for rounds and pears. Add 10% to 20% for emeralds and marquis.
Other Blue Sapphires
Heat treated material. Average brilliancy of 40% to 60%. Add to 20% or deduct to 10% for other cutting. Prices for ovals and cushions. Add 8% to 10% for rounds and pears. Add 10% to 20% for emeralds and marquis. Note: If certified Burmese and untreated, add 50%, except fair or lower grades. Typically, mid-quality untreated blue sapphire will sell for 20-30% more than a treated stone of the same quality. Top-quality unheated stones could get a premium of 50% or higher, especially if they’re large.
Fancy Sapphires
Average brilliancy of 30% to 40%. Add to 20% or deduct to 10% for other cutting. Prices for ovals and cushions. Add 7% to 10% for rounds, pears and marquis. Add 15% to 30% for emerald cuts.
Other Sapphires
See our article called Phenomenal Gems to read more about the grading and valuation of stones with asterism.
Star Sapphire is a type of sapphire displaying an optical star-like effect. This effect is caused by asterism. You can read more about asterism in our Phenomenal Gems article.
International Gem Society
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