1ct Ruby and Genuine Diamond Heart Necklace. Nice necklace for that July Baby! Heavy sterling silver and 1 carat total gem weight ruby and Genuine diamond necklace. Diamond content is .01 carat in J/K color and I2 clarity and 18 inch chain. Diamond Color: J/K. Diamond Clarity: I2. Total Diamond Weight: 0.005 ( 0.01 ct). Diamond Quantity: 1 Diamonds. Diamond Shape: Round Brilliant. Metal Stamp: .925 Sterling Silver Material: Silver