125 CARATS LAB CREATED ROUGH BLUE SAPPHIRE CORUNDUM SYNTHETIC FLAME FUSION

Description

CHEMICAL COMPOSITION:
Al
2
O
3.   ......
SPECIFIC GRAVITY:
3.99–4.02.....
REFRACTIVE INDEX:
1.761–1.769.....
HARDNESS:
9....
DISPERSION:
0.015–0.018....
FIRE/HEAT RESISTANCE:
2044 °C
....
PROCESS:
Verneuil/Flame Fusion....
WE SUPPLY:
Best quality Lab Created Rough in wide range of colors....
SIZES AVAILABLE:
Half boule
The
Verneuil method
(or
Verneuil process
or
Verneuil technique
), also called
flame fusion
, was the first commercially successful method of manufacturing synthetic
gemstones
, developed in the late 1883
[1]
by the
French
chemist
Auguste Verneuil
. It is primarily used to produce the
ruby
,
sapphire
and padparadscha varieties of
corundum
, as well as the
diamond simulants
rutile
and
strontium titanate
. The principle of the process involves melting a finely powdered substance using an
oxyhydrogen
flame, and crystallising the melted droplets into a
boule
. The process is considered to be the founding step of modern industrial
crystal growth
technology, and remains in wide use to this day.
LAB CREATED ROUGH
BLUE SAPPHIRE
SYNTHETIC CORUNDUM NO.33 MEDIUM BLUE COLOR
SHIP AND MADE IN THAILAND
QUANTITY 1 PIECES