Platinum Screw Chain Necklace Material: Pt850 Length: 37cm Width: 1.9mm Accessories: The included moisturizing oil has caused some staining, so the condition isn't perfect, but it comes with a quality assurance certificate. Pendant Top Material: K18? (I've forgotten, but it's stamped 750) Marking: 750 0.05ct The three diamonds inside move ✨ This is genuine jewelry, and I've received an appraisal for its value from a precious metals buyer. It's been used only a few times, so there are some minor scratches, but it's in beautiful condition with no damage. I purchased this necklace chain, choosing it to match the heart-shaped pendant top. It sparkles beautifully between the chest and neck ✨ Due to the rising prices of precious metals, I am not considering lowering the price. Thank you for your interest. Material: Platinum Decoration: Diamonds