Necklace -Filigree and Australian Pearls 18 carat gold (kt) yellow gold: 37.30 grams (gr). 9 thaiti pearls: total weight 173.00 carat (ct). 3 australians pearls: total weight 46.50 carat (ct). Length: 19.5 inches (USA) | 49 cm (Italy). Codex: Oets.