Please read the description to the end before purchasing. We do not accept returns or exchanges, as return and exchange scams have been increasing. Ladies' Platinum Diamond Heart Necklace pt850 Diamond, I believe it was 0.5 carat, but I'm not certain. Chain: Approximately 41 cm when fully extended With adjuster Minus 3 cm There are some minor scratches. If you have any questions, please ask before purchasing. Material...Platinum Decoration...Diamond