Cabochon cut natural ruby ct 4.01 Burma heat treatment, GRS certified
€ 7.100,00 VAT inc.
Natural oval cut ruby accompanied by an international certificate. Pink-red, transparent gem with small natural inclusions. heat treatment on the rough to slightly improve the colour
ORIGIN Burma
GRS CERTIFICATE
GRS GemResearch Swisslab AG is an independent gemological research laboratory specializing in the determination of origins and the generation of authenticity reports for rubies, sapphires and emeralds, as well as other important colored gemstones including spinel, tourmaline and garnet.
GRS's six international gemological research laboratories are strategically positioned at key sites globally and are equipped with the latest and most sophisticated technology to recognize and identify advanced gemstone treatments. Ongoing research efforts coupled with expeditions to the world's most important gemstone mines appear in our film documentaries and book series