14 GRAM 1 PIECES ..LAB GROWN CREATED BIRON EMERALD FROM AUSTRALIA

Description

A new synthetic emerald grown in Western Australia is now commercially available as faceted stones. Infrared spectra revealed the presence of water, thereby confirming that these synthetic emeralds are synthesized by a hydrothermal process. Chemical analysis showed that they contain vanadium as well as lesser amounts of chromium. This new synthetic exhibits some characteristics that are distinctly different from other synthetic emeralds and therefore must now be considered when identifying emeralds. In addition to distinctive inclusions such as gold, the Biron synthetic is inert to ultraviolet radiation, has a specific gravity of 2.68 -2.71, and refractive indices of = 1,569 and (D = 1.573. This article examines in detail thegemological properties of the Biron hydrothermal synthetic emerald and discusses means of identifying this new synthetic.
35
gram CHATHAM LAB CREATED LAB GROWN ROUGH BIRON EMERALD
SHIP TOTAL: 1 pieces
SIZE 44 MM LENGTH X28MM BREATH  5.30MM THICKNESS
SHIP FROM THAILAND. OUR OLD STOCK
ORIGINAL BIRON PRODUCT
AND MADE IN AUSTRALIA
Biron® Emerald Vs Natural Emerald Comparsion:
PROPERTIES
Created Emerald
(Biron type)
Hydrothermal
Created Emerald
(Gilson type)
Flux melt
Natural Emerald
Classification
Beryl
Beryl
Beryl
Chemical Composition
Be3Al2Si6O18
Be3Al2Si6O18
Be3Al2Si6O18
Crystal System
Hexagonal
Hexagonal
Hexagonal
Hardness (mohs)
7.5-8.0
7.5-8.0
7.5-8.0
Specific Gravity
2.70
2.65-2.70
2.65-2.70
Melting Point
1,410∘C
1,410∘C
1,410∘C
Transparency
Transparent
Transparent
Transparent
Refractive Index
1.570-1.577
1.563-1.568
1.565-1.598
Birefringence
0.007
0.005
0.005-0.008
Average Dispersion
0.014
0.014
0.014
Chelsea color filter
Bright red
Dark red/pink
Dark red/pink
Inclusion
Liquidus, Solidus
Liquidus, Solidus
Liquidus, Solidus-liquidus