18K Gold Vintage/Antique Stickpin

18K Gold Vintage/Antique Stickpin

18K Gold Vintage/Antique Stickpin with 1" x 3/4" ( approx) beautiful Malachite stone.
Unmarked (not unusual for the time) but acid tested at 18K, cap on end of pin isn''t original but has a pat. date of Aug 1709 on it, I believe cap is brass. Overall weight is 8.3 grams