Geuda is considered one of the most improbable gem minerals due to the fact that it can be heated to produce excellent blue, fancy yellowish-orange, or pink sapphires. They can be …

City of Gem is fine quality natural gemstone supplier from the direct source. We Supply all kind of Gemstones from the minings and direct gem dealer’s in gem city Sri Lanka.

Geuda (ගෙවුඩ, pronounced gay-yoo-dah [needs IPA]) is a form of the mineral corundum, or sapphire, found primarily in Sri Lanka. Around 70%-80% of gems mined in Sri Lanka belong to …

Ceylon Natural Heating Sapphires "Rathu Ottu" ( shiny glass body half crystal )• Mining : Rakwana, Sri Lanka - city of gem Ratnapura

Nov 11, 2020 · ඔට්ටු Ceylon Natural Heating Sapphire Rough Stone " Athul ottu" • Weight : 1.00 Cts • Height : 6.1 mm • Width : 4.5 mm • Depth: 3.6 mm • Colour: White with Royal Blue …

The most common Geuda varieties are Diesel Geuda, Milky Geuda, Silky Geuda, Dun Geuda, Ottu and Kowangu Pushparaga. The basic body colour in all these can be pale Blue, Yellow or …

discovered that this low value by-product of gem mining could be transformed by high temperature heating into beautiful and eminently SALEABLE sapphires. Many pieces were …

City of Gem is fine quality natural gemstone supplier from the direct source. We Supply all kind of Gemstones from the minings and direct gem dealer’s in gem city Sri Lanka.

Across centuries, Sri Lanka’s fame in the gemstone world has been propelled by remarkable finds, making it a sought-after destination for large blue sapphires and blue star sapphires …

Jun 11, 2010 · "Ottu" sapphires are a type of translucent whitish sapphires ("gueda") with spots or bands of blue. Gueda sapphires were originally considered worthless until Thai gem heaters …