Large oval lavender stone cabochon set in gold tone mounting. Tested as nephrite/quartz on Presidium gem tester- see pictures Light semi-transparent lavender coloration Approx. 1 3/4 inches diameter Approx. 6.8 mm thick Ice cold to the touch Convertible design: Functions as brooch Side loop allows wear as pendant or ribbon choker / sash slide Mounting is gold tone with locking closure. No visible gold marks. Light surface wear consistent with age. Substantial presence and versatile styling.