Heat Treated Sapphire Prices

To put it simply the most expensive and rare sapphires will be untreated most commercial sapphires will be heat treated while the cheaper stones will be surface diffused or beryllium treated.

Heat treated sapphire prices. Synthetic green sapphires show lines at 5300 and 6870. 2 6 carat unheated cushion shape ceylon cornflower blue sapphire. Heat treated sapphires may show no lines or just at 4500. The cost of heat treating starts at 29 for up to five carats.

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. And 2 5 carat gems fetching 1000 3000 usd per carat especially blue sapphire from sri lanka ceylon. Natural untreated sapphires are far more uncommon and valuable than treated and chemically altered stones.

Learn how heat treatments beryllium diffusion flux healing fracture filling and irradiation change the look of sapphires on the market today and into 2020. Points to note before reading further. Good ones can still cost upwards of us 3 000 per carat. Thermal or heat treatment is common in commercial sapphires as heat brings out the vivid colours of sapphires.

In terms of price the treatment of a stone will greatly affect the price. Most sapphires are heat treated. Gia and only 5 are unheated natural sapphires. Some flux grown synthetic sapphires have a faint line at 4500 most not diagnostic.

Discover what it means for a sapphire to be treated how to identify them how these processes affect the rarity and integrity of a stone. Just to sum it up in a measurable number on average 95 of the sapphires available in the market today have been through some form of treatment source. Synthetic color change sapphires show a line 4740. Prices for normal or slightly heated sapphires are still not cheap.

Approximately only 0 5 1 of the sapphires discovered are of gem quality without treatment. Lines rarely seen in kashmir sapphires. How does heat treatment affect a sapphire s value. In the last few years prices for be heated blue sapphire are now at their highest with stones weighing over 5 carats demanding 3000 5000 per carat.

Sapphires that are heat treated are still considered natural 100 natural. Natural green sapphires show lines at 4500 4600 and 4700. We specialize in heat treating sapphires from gem mountain but can consider heat treating sapphires from other locations after examining the stone in person. At deliqa gems.

However before paying these high prices.