Thursday, December 30, 2021
Requirement for a well-equipped gemological laboratory for analysing gemstones/diamonds
1.
Natural Gemstones
samples e.g Emerald, ruby, sapphire (Cut/rough)
2.
Treated gemstones
samples (dyeing, filling, heat treated etc)
3.
Composite stones
(double/triplet)
4.
Synthetic gemstones
samples (made by all manufacturing process such as flux, flame fusion etc.)
5.
Natural diamonds
6.
Treated diamonds
(HPHT, glass or wax filling , irradiated etc)
7.
Synthetic
diamonds
8.
Diamond Imitation
stones (CZ, GGG) etc
9.
Master stones of
diamonds (For diamond color Grading)
10.
Energy dispersive
x-ray fluoresces (EDXRF), Positive
identification of rage gem material, separation of jade group, turquoise and
diamond from its simulants in parcels,
separation of natural from synthetic gems, origin determinations ,
identification cabochons and mounted stones.
11.
The Raman
Spectroscopy, gemstones and material
identification, identification of inclusions exposed at the surface and within
gem materials, separation of natural from synthetic material, separation of
amorphous and poly crystalline/ microcrystalline materials.
12.
X-Radiography, photographs of the internal structure of pearls and
other materials
13.
FTIR (Fourier Transmissions Infrared
Spectroscopy)
14.
Gemological
Microscope 45x but extendable to 120 x.
15.
Immersion
Microscope with attached Polaris filters.
16.
Refractometer
analog (sample) with liquid
17.
Refractometer
Digital
18.
Ultra Violet Lamp
with Short waves/long waves
19.
Spectroscope
20.
Specific gravity
Balance
21.
Specific gravity
liquids
22.
Polariscope
23.
Dichroscope
24.
25.
Loupe 10x
26.
Tweezers (sample,
lock, prong)
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