Here is a Fine Hearts On Fire 3-Prong Diamond Solitaire Pendant.  Made from Solid Platinum 950 and weighs 7.1 grams.  It holds one Natural Round Brilliant Diamond that is a 0.33Ct H Color VS2 Clarity , Full of Shine and Fire.  Necklace is 18 inches long.  Hallmarked PT950 , HOF Co, Italy, and a symbol of Hearts On Fire.  Excellent Condition!  Retail is $3,500 + Tax!