Gemologist's Journal · Bangkok

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Gemstones, General, Opal, Sapphire

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 […]

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

How to buy an opal - white opal diamond ring rose gold ring
Gemstones, General, Opal

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 […]

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

General

It is now possible to buy ethically sourced Zambian emeralds through partnership of Gemfields and Gübelin Gem Lab using Nano-Particle Technology.

EMERALDS CAN BE ETHICALLY SOURCED Gemfields has decided to tackle head on a big issue which has been plaguing the gem trade for a long time.  How to guarantee the emerald you bought is ethically sourced? Through the partnership with Gübelin Gem Lab, they came up with a very creative solution by using Gübelin’s […]

It is now possible to buy ethically sourced Zambian emeralds through partnership of Gemfields and Gübelin Gem Lab using Nano-Particle Technology. Read →

Gemstones, General

What lab or certification is the best for checking your expensive ruby, sapphire or emerald?

BEST LAB TO CHECK GEMSTONES What is the best lab to check gemstones? Buying a high quality ruby, sapphire or emerald isn’t cheap, but how do you know the beautiful expensive gemstone you are buying is the quality you are expecting? As I have discussed in our previous blog posts, it is very important […]

What lab or certification is the best for checking your expensive ruby, sapphire or emerald? Read →

Avoid buying conflict diamonds - CanadaMark & GIA certificate copy of 1.02 carat, G-color, IF-clarity Diamond
Diamond, General

How to buy ‘conflict-free’ diamonds or avoid ‘blood diamonds’ when purchasing a diamond in Bangkok, Thailand?

AVOID BUYING CONFLICT DIAMONDS IN BANGKOK, THAILAND An important issue which has been affecting the diamond trade (and many other commodities) since the beginning is how diamonds have contributed in funding conflicts like civil wars, genocide and terrorism. With the power of media and internet we can now see many articles, documentaries and famous […]

How to buy ‘conflict-free’ diamonds or avoid ‘blood diamonds’ when purchasing a diamond in Bangkok, Thailand? Read →

How much does no oil emerald cost? Five No Oil Emerald Comparison
Gemstones

How much does it cost to buy a 1 to 3 carat untreated, no oil, 100% natural emerald from Zambia?

Continuing with the series in how much a particular gemstone should cost, today I will try to tackle another common question I get asked which is – “how much does a no oil, untreated, 100% natural emerald cost? Can you forward me a price list for these type of emeralds from 1 carat to […]

How much does it cost to buy a 1 to 3 carat untreated, no oil, 100% natural emerald from Zambia? Read →

Diamond, General

How to buy a diamond online in Bangkok or anywhere else?

BUYING DIAMOND ONLINE IN BANGKOK Buying a diamond online today has never been easier.  There are now multiple websites providing free access to diamond inventory search lists, actual GIA (or other certificate) copies for each choice and beautiful finished ring images. Therefore, you can now just search and browse your ring choice and then […]

How to buy a diamond online in Bangkok or anywhere else? Read →