Vintage Miniature Bee Insect Brooch Lapel Pin 18K 750 Solid Gold with Ruby Eyes. The beautiful tiny little jeweler made insect is marked 750 on underside, which is the European mark for 18K Gold, very from possibly Italy. Corkscrew type fastener, which is better for thicker materials like a coat or jacket. Weighs 1.7 Grams and measures 1.5 cm in length.