The Gemological Institute of America (GIA) will be taking part in the Gemmological Laboratories Zone at the June Hong Kong Jewellery & Gem Fair, June 20 to 23, at the Hong Kong Convention & Exhibition Centre (HKCEC).
GIA will give show attendees the opportunity to see live demonstrations of its newest instruments: The GIA iD100???EUR? ? gem-testing device, the GIA UV Lamp and Viewing Cabinet, and the new GIA Polariscope.
The GIA iD100 gem-testing device combines advanced spectroscopic technology with GIA's decades of diamond and gemstone identification research to separate all laboratory-grown (HPHT and CVD) diamonds and diamond simulants from natural diamonds. The desktop instrument can screen loose and mounted diamonds as small as .005 carat, with clear audio and visual results - "pass" for natural diamonds and "refer" for potential laboratory-grown diamonds and simulants that require further testing.
Those who require a device that could help evaluate fluorescence "consistently and accurately" might want to check out the GIA UV Lamp and Viewing Cabinet. This portable desktop device provides the same narrow band UV illumination used by GIA laboratories to evaluate fluorescence. The compact viewing enclosure includes a calibrated reference for the intensity of blue fluorescence in diamond, ranging from "None/Very Faint" to "Strong."
The new GIA Polariscope tests the optical properties of gemstones to determine whether a stone is singly refractive, doubly refractive or is an aggregate. The updated device can further determine whether doubly refractive stones are uniaxial or biaxial. The Polariscope can also detect pleochroism in doubly refractive colored stones.