Unheated sapphires mean the sapphire is natural and it has not been enhanced by any form of heat treatment or any other treatment.
Are heated sapphires worth less?
Heating is an accepted treatment for sapphire. But for fine-quality sapphire, confirmation from an independent laboratory like GIA that there is no evidence of heat adds to a sapphire's rarity and value.
How can you tell if a sapphire is heat-treated?
The results can be dramatic, transforming pale stones into ones with lively, saturated colors. Knowledgeable gemologists will be able to discern whether a sapphire has been subjected to this kind of extreme heating. When corundum is heated to between 1200-1600 degrees Celsius, star sapphires can be created or improved.
How much are raw sapphires worth?
Sapphire Price Sapphire prices can range greatly, depending on many factors. Sapphires can come as cheap as $25 per carat, to over $11,000 per carat. A blue sapphire around 1 carat is likely to cost from as little as $450 to $1,600, depending on quality.
How much is rough sapphire per carat?
A sapphire stone can always be re-cut, so clarity is probably more important. A top quality 1 to 2 carat stone might retail for prices between $800 - $1200 per carat. While quality 2 to 3 carat stones would sell for approximately double the price per carat, so that would be around $1600 - $2000 per carat.
How can you tell if a raw sapphire is real?
To identify if the sapphire is real, stay in total darkness and use a flashlight to test it. If the stone is genuine, light of the same color as the sapphire is reflected. If it is a fake sapphire jewel (usually made of glass) you will be able to see other colors in the crystal.
Which color sapphire is most valuable?
Blue Sapphires
What is the difference between heated and unheated gems?
In the market, almost 95% of the Sapphires are heat treated. The higher amount of treatment in the sapphire, the lower the price, as the corundum's rarity creates its price. The difference between Unheated and Heated Sapphire is like the difference between processed and natural food.
How can you tell if a sapphire is heated?
https://www.youtube.com/watch?v=X1XkU9KJazI
Are unheated sapphires worth more?
Are natural, no-heat sapphires more rare and valuable? Yes, sapphires that have not undergone any color or clarity enhancement along the supply chain (mine to retail) are rare and therefore more valuable than heated sapphires that are abundant in the market. Are all unheated sapphires the same? No.