A very rare lovely natural and untreated colour change sapphire from Songea, Tanzania. These phenomenal gems appear one colour in incandescent light, and an entirely different colour under fluorescent light sources. Excellent clarity and colour. Colour change is quite rare in sapphires, as it is caused by trace amounts of the element vanadium. As corundum seldom forms in areas with enough vanadium present to cause the phenomena, these exceptional specimens are highly desirable.
Ideal for setting in jewellery or adding to a collection.
Quantity - 1 Carat Weight - 0.31 Gem Type - Natural Sapphire Clarity - VVSI Size / mm. (L/W/D) - 4mm/3mm/2.7mm Origin - Tanzania Treatment - Unheated / Untreated
