Gorgeous Womens 18K Yellow Gold Over Sterling Silver Diamonds and 7.0 CTW Garnet 17 Inch Designer Necklace. Gemstone Description Gemstone: Diamond Color: I - Near Colorless Clarity: SI2 CTW: 0.050 CTW Cut: Round Cut Gemstone Description Gemstone: Garnet Color: Red Gem Grade: AA CTW: 7.000 CTW Cut: Oval Cut Material Information Plating Material: Yellow Gold Plating Material Karat: 18 k Primary Material: Sterling Silver Primary Material Weight: 7.00 g Primary Material Karat: 0.00 k Jewelry Information Mount Type: Necklace Gender: Womens Length: 17.00 in