Reverse Topaz Double-Face NecklaceNanis reverse topaz double face necklace in yellow gold. 18K Yellow Gold BLUE DIAMOND 0. 24 CT, SWISS BLUE TOPAZ 0. 56 CT,GREEN SAPPHIRE 0. 46 CT Central doublette in LONDON BLUE TOPAZ 1. 25 CT A gold and diamond necklace, enriched by beautiful and colorful natural stones, entirely handmade as all Nanis jewels. A true masterpiece in 18kt gold that alternates a central doublette with mother of pearl and London Blue Topaz, with an extraordinary pav of