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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How does ‘Phenomena Effects’ like Adularescence, Asterism, Chatoyancy, Iridescence, Play of Color, and Color Change affect the value of gemstones?

In our previous blog posts, we have discussed how the value of gemstones are affected by these six factors Color Carat Weight Clarity Cut Origin Treatment However, certain gemstones actually exhibit different phenomena effects like Adularescence Asterism Chatoyancy Iridescence Play of Color Color Change So, “How do these gemstones get these phenomena and how does … Continue reading How does ‘Phenomena Effects’ like Adularescence, Asterism, Chatoyancy, Iridescence, Play of Color, and Color Change affect the value of gemstones?

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?