jewellers and gemmologists need to be aware of this
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Suite 1202, 227 Collins Street Melbourne Victoria Australia ph: +61 3 9654 1550 fax: +61 3 9654 0631 email: [email protected] 2013
2013 is flying by and we have just purchased a wonderful assortment of new
stock. To see our extensive collection of fine gemstones visit us at the:
2013 JAA International Jewellery Fair Sydney Exhibition CentreSunday 1st to Tuesday 3rd of SeptemberStand H47Receive a 10 % discount on gems purchased at the Fair.
Peridot
Is the birthstone for August. We have an extensive stock of this attractive green
gem from small rounds to fine quality individual gems in an assortment of
shapes and sizes. Peridot ranges in colour from pale yellowish green to deep
brownish green depending on the amount of iron in the crystal structure.
Bright mid green to rich deep green are the most sought after colours.
Jewellers should be aware that Peridot should not be subjected to extreme
heat and can be damaged in various acids.
Glass Filled Sapphire
The glass-fracture filling of poor quality
ruby has spawned a new treatment,
cobalt –glass fracture filling of rejection
quality sapphire. Whereas the ruby
relied on colourless-yellow glass being
injected into the multitude of surface
reaching fractures, this treatment
involves the use of a cobalt-doped
(blue) glass, thereby not only improving
the clarity of the material but the colour
as well.
As with the glass fracture filled ruby,
detection by hand lens will reveal numerous
bubbles trapped in the glass and a myriad
of surface reaching fractures that appear
as scratches on the surface. However, the
sapphire will show intense blue colouration
within the fractures, with an appearance
similar to dyed crackled quartz.
The most telling of the gemmological tests is the strong
red appearance when viewed under the Chelsea filter.
Jewellers and gemmologists need to be aware of this
material as the use of the torch or various solvents will
damage or remove the glass leaving the stone in its
original opaque, poor coloured state.
Aquamarine5.09ct
12.2 x 10.8 mmPeridot6.19ct
13.9 x 11 mm
Pink Sapphire1.24ct
6.9 x 5.9mm
Purple Sapphire3.99ct
10.5 x 8.3 mm
Blue Sapphire 4.07ct
10.2 x 7.4 mm
Tourmaline4.08 ct
13 x 8mm
Parti –Sapphire4.39ct
9.6 x 8 mm
Peridot3.70ct9 mm
Ruby1.46ct
7.4 x 6.5 mm
Blue Sapphire3.53ct
11.1 x 7.3 mm
Tanzanite7.55ct
13 x 10.4 mm
Emerald1.27ct6.6mmPeridot
3.32ct9.4 mm
Pink Sapphire3.05 ct
9.6 x 6.5 mm
Cabochon Ruby3.54ct
11.6 x 6.8 mm
Orange Sapphire1.10ct
7.3 x 5.2 mm
Yellow Sapphire2.22ct
8.3 x 6.4 mm
Tourmaline1.56ct
8.2 x 6.2 mm