Button Shop › Small 19th Century 18k Gold Button with Pearl and Sapphire Small 19th Century 18k Gold Button with Pearl and Sapphire $120.00 Documented in the collection as gold and sapphire button. Tested as 18k. Size: NBS Small 9/16”Condition: Excellent Documented in the collection as gold and sapphire button. Tested as 18k. Size: NBS Small 9/16”Condition: Excellent Add To Cart Added!