sapphires

Emerald, Gemstones, Ruby, Sapphire

How do labs or gemologist determine the origin (or provenance) of Rubies, Sapphires & Emeralds?

If you have read my previous blog posts or seen my videos’ regarding what determines the value of gemstones, country of origin is one of the most important criteria.  Certain origin where the gemstone is mined from always commands a higher price due to its history, rarity, and perception they have with traders or

How do labs or gemologist determine the origin (or provenance) of Rubies, Sapphires & Emeralds? Read →

General

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

I decided to do a video tutorial explaining how I will go about determining the value of a blue sapphire. The method I used to determine the value is by first categorizing the stone based on the 4Cs + OT method. The six criteria I have summarized in bullet form below: HOW TO DETERMINE

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

Gemstones, Sapphire

Sapphire Treatment Guide – Natural, Heated, Diffused, Glass-Lead Filled Treatments

Video explanation between unheated sapphire vs heated sapphire (rutile silk): WHY KNOWING ABOUT SAPPHIRE TREATMENTS IS IMPORTANT? Before buying any sapphire it is important to know what type of treatment it has gone through. Sapphires have different levels of treatment. Natural (no treatment) Heat Treatment to enhance color Lattice Diffusion to enhance color aggressively

Sapphire Treatment Guide – Natural, Heated, Diffused, Glass-Lead Filled Treatments Read →