Gem Testing Laboratory

"GHI" is a Gem Testing Laboratory society based only in Thailand.

Gem identification both in the field and in the laboratory, and method of gem enhancement and gem grading are summarized. A section is devoted to the methods in the synthesis of gem materials and of gem simulants.

This identification covers the conclusions of "GHI" laboratory reports expert who have carefully graded, tested, examined and analyzed the stone by means of specialized instruments available at the Laboratory at a time of examination. They have drawn up the report according to the highest professional standards.

All report will be printed on original package. No corrections or alternations of any form shall be accepted on the gemstone report, and all gemstone report are laminated for protection.

For gem and crystal collectors, gemmologist, gem dealers, jewelers, gem-setters, goldsmiths, lapidaries and rock-hound, this identification report will be appeal for anyone who can appreciate the incredible variety of hue in the gem and mineral kingdom.

A special vote of thanks go to the following customers for images to illustrate this report.

Y- Yellow images Report

W- White images Report

B- Blue images Report

G- Green images Report

R- Red images Report

No Photo Report:

This report contains the identification of polish gemstone by description, measurement, color, weight, cut and stating an opinion on their authenticity, and treatment(s).

Carat weight Price
00.20 ct. – to – 4.99 cts. 300. Baht.
05.00 cts. – to – 9.99 cts. 350. Baht.
10.00 cts. – to – 19.99 cts. 450. Baht.
20.00 cts. Up 500. Baht.

With photo Report:

This report contains the identification of polish gemstones or diamond, by 1 photographic images, description, measurement, color, weight and stating an opinion on their authenticity and treatment(s).

Carat weight Price
0.20 ct. – to – 4.99 cts. 400. Baht.
05.00 cts. – to – 9.99 cts. 450. Baht.
10.00 cts. – to – 19.99 cts. 500. Baht.
20.00 cts. Up 550. Baht.

With photo Diamond Report:

For diamond, by 1photographic images, description, measurement, weight, clarity grade, color grade, proportion, finish grade and fluorescent and stating an opinion on their authenticity, and treatment(s).

Carat weight Price
0.20 ct. – to – 0.99 ct. 450. Baht / Fancy 600. Baht.
1.00 cts. – to – 1.99 cts. 600. Baht. / Fancy 700. Baht.
2.00 cts. – to – 3.99 cts. Fancy 800. Baht.
4.00 cts. – up Fancy 900. Baht.

With 2 photos Full Report:

This report contains the identification of polish gemstones or diamond set in jewelry or loose, this report contains 2 photographic images, description, measurement, color, weight, refractive index, specific gravity and stating an opinion on their authenticity, variety and trade name and treatment(s). It does not constitute a guarantee for or an appraisal of the object or gemstone described therein.

All Report will be printed on original paper and will bear an official signature of gemologist, No corrections or alternations of any form shall be accepted on the pack report, and will laminated for protection.

Carat weight Price
0.20 ct. – to – 4.99 cts. 800. Baht.
5.00 cts. – to – 9.99 cts. 1,000. Baht.
10.00 cts. – to –19.99 cts. 1,100. Baht.
20.00 cts. Up. 1,200. Baht.

Jewelry: Center or main stone, 1,200.-
  (Multiple stone). + 100/ stone
Beads : (Multiple stone, beginning). 2,000.-