AHKAH K18 Tear Necklace This is a single diamond necklace with a heart-shaped claw setting. The chain is K18 gold. I purchased this at the now-defunct Jingu main store, and I've decided to sell it since I haven't worn it in the past few years. I can't find the purchase certificate or box, so I will ship it in a bag from another brand. The chain length can be adjusted in one step.