Nice vintage ring in Art Deco style with blue spinel Made of sterling silver, hallmarked with 925 & maker's mark Ring size c. 15,5mm Measurements of the stone c. 11mm/11mm Weight c. 5,87g In very good pre-owned condition, some patina, normal signs of wear-please, see scan The stone has been tested with gemstone tester PGTII-please, see the last photo The gemstone tester does not differentiate between natural and synthetic coloured gemstones, so this particular stone could be synthetic Gemstones are commonly treated to enhance colour or clarity. This has not been researched for this specific item The accuracy of the displayed colours depends on the hardware and software. Colours may differ slightly from the original product Shipping with DHL/UPS(tracked & insured)