Suite 1202, 227 Collins Street Melbourne Victoria Australia ph: +61 3 9654 1550 fax: +61 3 9654 0631 August 2013 email: [email protected]
2013 is flying by and we have just purchased a wonderful assortment of new The most telling of the gemmological tests is the strong stock. To see our extensive collection of fine gemstones visit us at the: red appearance when viewed under the Chelsea filter. 2013 JAA International Jewellery Fair Jewellers and gemmologists need to be aware of this Sydney Exhibition Centre material as the use of the torch or various solvents will Sunday 1st to Tuesday 3rd of September damage or remove the glass leaving the stone in its Stand H47 original opaque, poor coloured state. Receive 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. Blue Sapphire Yellow Sapphire Pink Sapphire Bright mid green to rich deep green are the most sought after colours. 4.07ct 2.22ct 1.24ct 10.2 x 7.4 mm 8.3 x 6.4 mm 6.9 x 5.9mm Jewellers should be aware that Peridot should not be subjected to extreme heat and can be damaged in various acids.
Emerald Aquamarine Purple Sapphire 1.27ct 5.09ct 3.99ct Peridot Peridot Peridot 6.6mm 12.2 x 10.8 mm 10.5 x 8.3 mm 6.19ct 3.32ct 3.70ct 13.9 x 11 mm 9.4 mm 9 mm
Glass Filled Sapphire The glass-fracture filling of poor quality ruby has spawned a new treatment, cobalt –glass fracture filling of rejection Tanzanite Tourmaline Ruby 7.55ct 4.08 ct 1.46ct quality sapphire. Whereas the ruby 13 x 10.4 mm 13 x 8mm 7.4 x 6.5 mm 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. Pink Sapphire Blue Sapphire Parti –Sapphire 3.05 ct 3.53ct 4.39ct 9.6 x 6.5 mm 11.1 x 7.3 mm 9.6 x 8 mm 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 Orange Sapphire Tourmaline Cabochon Ruby 1.10ct 1.56ct 3.54ct similar to dyed crackled quartz. 7.3 x 5.2 mm 8.2 x 6.2 mm 11.6 x 6.8 mm