thainativegems

How to Check GIA Laser Inscription Under The Microscope [Video]?

In this short video tutorial, using a diamond ring we custom made, I wanted to show How to check the GIA Laser inscription under the microscope and the verification methods one should use. The laser inscription is the fastest way to verify if your diamond matches with GIA report number which provides the diamond’s 4Cs …

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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 »

Featured on Masala Magazine

For Masala Magazine October November 2019 Issue, our managing director’s article, Tarun Gupta, was published. Titled “A Handy Guide to Buying Jewellery in Bangkok,” the article provides a practical guide and questions on how to buy jewellery in Bangkok. E-magazine version can be seen here: http://masalathaicloud.com/masala/e-magazine/e-magazine-masala-vol2-issue-11-october-november-2019/#p=69 We also provided a full version of our answers …

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Difference between Synthetics and Natural Ruby, Sapphire, Emerald

How to tell the difference between natural rubies, sapphires, emeralds from synthetics? Lookswise there is no difference between synthetics and natural gemstones. They have the same chemical composition, crystal structure, and properties as natural gemstones. The only way to tell is by looking at internal inclusions or clarity characteristics. The price difference between natural gemstones …

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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 A …

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What are synthetic diamonds (man-made diamonds) and will they affect natural diamond trade or value?

Synthetic diamonds is one topic which is not going away from the news or diamond trade discussion for the last few months. Since the big announcement in early June by De beers that they are creating their own synthetic diamond jewelry line and then the second big announcement by US Federation Trade Commission’s (FTC) decision …

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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 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 »

How to buy an opal - white opal diamond ring rose gold ring

Natural Opal buying guide – How to check and understand difference between different opals?

Opal is one of the most popular phenomena gemstones. They display very unique characteristics like ‘play-of-color’ or different background fire colors. They are quite abundant but also rare as well depending on the quality grades. Different quality has different price levels which we will explain below. How to Buy an Opal – Opal Classification In …

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