A SAPPHIRE SINGLE-STONE RING
Mounted with an octagonal mixed-cut sapphire weighing approximately 16.78 carats
Accompanied by report no.GRS2010-092050 dated 17 September 2010 from The Gem Research Swiss Lab (GRS), stating the 16.78ct sapphire originates from Sri Lanka (Ceylon), with no indications of thermal treatment
A SAPPHIRE SINGLE-STONE RING
Mounted with an octagonal mixed-cut sapphire weighing approximately 16.78 carats
Accompanied by report no.GRS2010-092050 dated 17 September 2010 from The Gem Research Swiss Lab (GRS), stating the 16.78ct sapphire originates from Sri Lanka (Ceylon), with no indications of thermal treatment
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