Platinum 0.3ct round brilliant solitaire Diamond box chain necklace 18" JR9767

Platinum 0.3ct round brilliant Solitaire Diamond necklace. This natural diamond has H color and Si2-I clarity, the pendant is 4.5mm wide, hallmark PT900. It suspends along an 18.0" platinum 850 box chain, the chain is adjustable. Weight 1.7 gram.