-40%
42 GRAM. LAB CREATED ROUGH ALEXANDRITE CORUNDUM SYNTHETIC FLAME FUSION
42 GRAM. LAB CREATED ROUGH ALEXANDRITE CORUNDUM SYNTHETIC FLAME FUSION
42 GRAM. LAB CREATED ROUGH ALEXANDRITE CORUNDUM SYNTHETIC FLAME FUSION
42 GRAM. LAB CREATED ROUGH ALEXANDRITE CORUNDUM SYNTHETIC FLAME FUSION
42 GRAM. LAB CREATED ROUGH ALEXANDRITE CORUNDUM SYNTHETIC FLAME FUSION

42 GRAM. LAB CREATED ROUGH ALEXANDRITE CORUNDUM SYNTHETIC FLAME FUSION

$ 14.78

Availability: 100 in stock
  • Natural/Lab-Created: Lab-Created
  • Condition: New without tags
  • All returns accepted: ReturnsNotAccepted

    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 ALEXANDRITE
    SYNTHETIC CORUNDUM NO.48 MEDIUM BLUE COLOR
    SHIP AND MADE IN THAILAND
    QUANTITY 1 PIECES