Skip to main content
Navigation principale
About us
Services
Main services
Diamond services
Gem services
Pearl services
Exclusive services
Recovery of melee diamonds
Cleaning & oiling of emeralds
Coral species identification
Cullinan report
Consulting
Products
News
Career
Contact
en
fr
News
Spiral structure in a Colombian emerald
Select category
- Any -
Insight
Micrographs
Research
Apply
Micrographs
03.01.2024
Margarite crystals in an unheated ruby from Mozambique
Read
Micrographs
27.12.2023
Spherical gas bubbles in a cavity filled with epoxy resin in a Colombian emerald.
Read
Micrographs
20.12.2023
Heat-treated bicolour sapphires from Shandong Changle, China
Read
Micrographs
15.12.2023
Epigenetic polycrystalline boehmite nestled in a fissure of an unheated purple metamorphic sapphire
Read
Insight
25.09.2023
GGTL Laboratories Switzerland is looking for: Melee diamond grader
Read
Research
01.07.2023
Cinnabar Inclusions in Ethiopian Opal
Read
Research
01.07.2023
An Ethiopian cup in rhinoceros horn (1/2)
Read
Research
30.06.2023
An Ethiopian cup in rhinoceros horn (2/2)
Read
Research
25.06.2023
An exceptional 9.89 carats photochromic zircon
Read
Research
12.05.2021
The unusual case of a jewel with a large number of flux-grown synthetic rubies sold as natural rubies
Read
Micrographs
01.04.2021
Synthetic flame-fusion colour-change sapphire seen under laser excitation
Read
Micrographs
04.03.2021
Synthetic flame-fusion synthetic colour-change sapphire seen under laser excitation
Read
Pagination
First page
« First
Previous page
‹ Previous
Page
1
Current page
2
Page
3
Page
4
Page
5
Page
6
Next page
Next ›
Last page
Last »
Navigation SM
About us
Services
Main services
Diamond services
Gem services
Pearl services
Exclusive services
Recovery of melee diamonds
Cleaning & oiling of emeralds
Coral species identification
Cullinan report
Consulting
Products
News
Career
Contact
en
fr