JUNIOR MINING SPECIAL -- Heat-treatment enhances sapphires

Unlike diamonds, which need only be cut to improve their value, rubies and sapphires generally require heat treatment to enhance their clarity and color. Nowadays, 95% of all sapphires and rubies produced worldwide are routinely heat-treated for this purpose. Recent...

By continuing to browse you agree to our use of cookies. To learn more, click more information

Dear user, please be aware that we use cookies to help users navigate our website content and to help us understand how we can improve the user experience. If you have ideas for how we can improve our services, we’d love to hear from you. Click here to email us. By continuing to browse you agree to our use of cookies. Please see our Privacy & Cookie Usage Policy to learn more.

Close