Sapphire

How Much and What Type of Inclusions does a GRS Certified 4 to 5 carat Unheated & Heated Vivid Blue Royal Blue Sri Lanka Sapphire have? [Video]

In the video above, I compared the prices between one unheated (100% natural) and two heated GRS certified 4 to 5 carat, Vivid ‘Royal Blue’ Sri Lankan Sapphire. All three sapphires are 4 to 5 carat each, are GRS certified, vivid ‘royal blue’ from Sri Lanka.  The cost difference is between unheated stone and two …

How Much and What Type of Inclusions does a GRS Certified 4 to 5 carat Unheated & Heated Vivid Blue Royal Blue Sri Lanka Sapphire have? [Video] Read More »

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 gemstone …

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

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 to determine the value of colored gemstones.  In summary, colored gemstones value affected by 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 …

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