This is an authentic vintage brooch from Tiffany & Co. it is crafted from 18k yellow gold featuring a textured spike style petals with a cluster of pearls accented with diamonds in the center of the flower. The pin has a safety clasp and it is signed by the desginer with the gold content.Hallmark: Tiffany & Co. 18kt ItalyDiamond: 5 points Color: G Clarity; VS1Pearls: 3.5-4mm Measurement: 1.53" x 1.60" long x 0.80" highWeight: 24.3 grams