How to Determine a Value of Blue Sapphire? Based on 4Cs plus OT – A Buying Guide [Video]

http://www.youtube.com/watch?v=9rZzprhjYtA In this post, I decided to do a video tutorial explaining how I will go about determining the value of a blue sapphire. The method I use to determine the value of a particular sapphire (or any gemstone) is by first categorizing the stone based on 4Cs + OT method, which are the six … Continue reading How to Determine a Value of Blue Sapphire? Based on 4Cs plus OT – A Buying Guide [Video]

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Blue Sapphire Buying & Treatment Guide – How to buy and tell the difference between natural unheated, heated, lattice diffusion treatment, and the brand new “glass-filled” sapphire?

Distinguishing between natural, no treatment sapphire with heated or new treatment sapphires is a very important skill every gemstone buyer should learn before venturing out to buy one. The price between each levels of treatment can range from the exceptionally expensive US$5,000 per carat for unheated natural sapphires to US$1 per carat for the new … Continue reading Blue Sapphire Buying & Treatment Guide – How to buy and tell the difference between natural unheated, heated, lattice diffusion treatment, and the brand new “glass-filled” sapphire?

Natural ruby buying & treatment guide – How to buy and tell the difference between natural unheated, heated, new glass filled ruby treatment?

Distinguishing between natural no treatment rubies with heated or new treatment rubies is a very important skill every ruby gemstone buyer should learn before venturing out to buy one. The price between each levels of treatment can range from the exceptionally expensive US$10,000 per carat for unheated natural rubies to US$1 per carat for new … Continue reading Natural ruby buying & treatment guide – How to buy and tell the difference between natural unheated, heated, new glass filled ruby treatment?