Two Beautiful Black Opal 14K Gold Stick Pins - from great grandmother’s NYC estate. Edwardian era from Australia. #1 is pear-shaped cabochon opal with flake pattern of bright green & blue with flashes of red, orange, and yellow. Back is grey potch. 14K gold pin is 7 cm. Total wt is 10.5 ct. #2 is oval doublet opal with moss pattern of bright rose-red & blue with flashes of green, yellow and orange. 14K gold pin is 6 cm. Back is black potch. Total wt is 8.25 ct.