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Rare non heat treated natural ruby and diamond ring made in France

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Description

Description

Rare non heat treated natural ruby and diamond ring made in France

A brief history on heat treating sapphires and rubies:

Sapphires and rubies have been heat treated for centuries to improve their colour and clarity and this is a worldwide accepted practice. It should be clarified that a sapphire or ruby that has undergone some form of heat treatment is still a natural gemstone from the ground and is not a synthetic/man made stone and the treatment is completely stable. Lately on the market there is a technique of glass filling or lead filling stones which will improve the colour of a natural gemstone, however this treatment is very unstable and the stone may look worse in a few years.

Click here to see more Retro era rings in store or online:

https://www.kalmarantiques.com.au/product-category/modern-retro-jewellery/retro-rings-modern-retro-jewellery/

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