Raffles GemLab is operated by :
Mr Gary Ong
Jeweller & Consultant Gemologist
Diamond Graduate (GIA)
Certificate in Jewellery Design (GIA)
For more details,please go to menu “Gems testing”
Thank you for reading.
Jadeite Terminology classification
Type A – refers to natural jadeite without chemical treatment.
Type B – refers to jadeite that is chemically bleached and polymer impregnated.
Type B+C – refers to jadeite that is chemically bleached, dyed and polymer impregnated
Type C – refers to jadeite that is color dyed.
Remark :At Raffles GemLab, Infrared spectrometer ( FTIR ) is used in our routine testing of jadeite.
Jadeite Quality Factors(refer to Type A jadeite only)
- Volume or size
What is an Imperial Jadeite ?
Imperial Jadeite refers to Type A natural jadeite that is of emerald green,fine texture and good translucency.Further categorisation depends on the brightness of the green color,the degree of translucency or transparency,clarity level,size and thickness,and the overall beauty of the piece under normal lighting condition.
What is an icy jadeite ?
An icy jadeite refers to Type A natural jadeite that is “colorless” to “near-colorless” and of fine texture.It’s transparency ranges from” translucent” to “good translucent” to” highly translucent” to “near-transparent” to “transparent”.
Natural jadeite is available in various colors as determined by the natural coloring element presence in the stone:
Green jadeite color is due to chromium and/or iron
Lavender jadeite color is due to manganese
Russet jadeite color is due to iron