Jewels 2009 Gemmological Exhibition and Competition, | [ 03 Nov 2009 - 08:54:48 AM ]
Open Competition to ALL Sri Lankans,,,
The Sri Lankan Gems and Mineral Show sponsored by the National Gem And Jewellery Authority will be held on 12th and 13th December 2009 at the BMICH committee lounge Colombo,Sri Lanka. Open competition for Sri Lankans to select
The Best natural crystal
The best cut and polished gemstone
The best gem studded Jewellery
The best gemmological photograph- minimum size 10 x 12 inch.
Tragedy of Calibrated Gemstone Industry in Sri Lanka. | [ 03 Nov 2009 - 04:53:10 AM ]
Tragedy of Calibrated Gemstone Industry in Sri Lanka. Geetha Gunathilake FGA , MGA
Introduction.
What is a calibrated gemstone? A gemstone cut into a particular shape and size is known as calibrated gemstone. There are internationally recognized shapes such as Rounds, Ovals, Pear, Marquise, Square, Rectangular,
Knowledge and Education - Diploma in Gemmology from a countr | [ 03 Nov 2009 - 04:42:50 AM ]
Knowledge and Education - Diploma in Gemmology from a country of Gems.
Ajith Siriwardena
President,GASL
B.Com(special) ,Msc.(Gemmology), FGA, IGI,
Therefore in the Examination of Diploma in Gemmolgy conducted by the Gemmologists Association of Sri Lanka covers the following subject areas such as scientific and theoretical knowledge of gems and practical aspects related to Gem Identification, Mining, Colour Enhancements and Value Addition, Fashioning, Marketing and Economic aspects of the industry.
Synthetics, are they really gems? | [ 03 Nov 2009 - 04:39:24 AM ]
Synthetics, are they really gems?
Professor P.G.R.Dharmaratne Phd,FGA,D Gem
Photo by Ajith Siriwardena
This is a question very often, a layman will ask you. Let us look at what we call gems. Any substance which has some special properties is called a gem. Colour, clarity or cleanness, transparency (In some materials lack of transparency, i.e translucency or opaqueness) or durability are the properties which make a substance a gem.
Picture of the month | [ 16 Aug 2008 - 09:38:13 AM ]
Photo and text by Dayananda Dillimuni, Consultant Gemmologist, FGA; FGG
Mineral inclusions of goethite and lepidocrocite are found in quartz varieties of rock crystal and amethyst. Goethite is the hydrated iron ore FeOOH in black colour needle form and lepiocrocite is of the same composition in tabular modification. Ruby mica is a term given to lepidocrocite due to its strong red colour.
I want ….. which stone will bring me luck…??!! | [ 16 Aug 2008 - 09:37:18 AM ]
Rosemary Dharmaratne,MGA,FGA
Picture by Ajith Siriwardena
The ancients believed what we in our present day believe too and it is not unhealthy to support that they took many of these ideas as ‘old wives tales’. many of these old wives are dead and you keep harking back to the old wives tales. Certainly there has been many technical advances in the 20th and 21st centuries.
The most vexing problem ever faced by the coloured gem stone tradeis without doubt the beryllium diffusion of corundum.The problems that came with the advent of synthetic gems around the turn of the nineteenth century was soon overcome with comparative ease with the equipment available even then in a modestly equipped laboratory. Even the more advanced synthetics that hit the market like the Kashans, Chathams, Inamoris, Knishkas, Lechleitners,Czochralski etc. could be easily identified by a diligent gemmlogist with a good microscope.
