Item: Natural Black Diamond Heart Pendant Necklace The heart pendant dangles from a rolo chain Metal: 0.925 Sterling silver Metal Finish: 14k White Gold Total diamond weight: 1.00 carat Diamond Color: Fancy Fancy Color: Black Diamond Clarity: I3 Chain Length: 18 Inch Closure: spring ring clasp Heart Measures: 23mm x 25mm All carat weights and measurements are approximate and may vary slightly from the listed dimensions. *T.W. (total weight) is approximate. 1 carat T.W. may be .95 to 1.10 carat. Pictures are super-sized to show detail, please read item dimensions carefully. All weights and measurements are approximate and may vary, slightly, from the listed information. Natural black diamonds are extremely rare. Care Instructions: Wash gently in warm water Gift Box and same day shipping! 925 Sterling silver is a great option because it's durable and long lasting, so it's good for rings, necklaces, bracelets, cufflinks, belt buckles, body jewelry... you get the picture. But keep in mind that silver jewelry is softer than gold, platinum and titanium, and it's likely to tarnish without proper care. Do not store jewelry in the bathroom. Keeping pieces stored in individual plastic bags will help prevent oxidation and scratches. Store outside of the bathroom to avoid the steam and humidity dulling or rusting them prematurely. ... The humid environment will speed up the oxidation process and cause jewelry to tarnish faster. "The accumulation of dirt, bacteria, oil or fogging in jewelry can affect your skin," says Dr. Peredo of Quora... But there is at least one good reason not to sleep on your jewelry. "Wearing your jewelry while you sleep is the number one cause of losing precious stones and abrading the barbs!" For inexpensive Sterling Silver jewelry repairs and sizing, we recommend Sears Jewelry Repair. 925 Sterling silver is a great option because it's durable and long lasting, so it's good for rings, necklaces, bracelets, cufflinks, belt buckles, body jewelry... you get the picture. But keep in mind that silver jewelry is softer than gold, platinum and titanium, and it's likely to tarnish without proper care. Do not store jewelry in the bathroom. Keeping pieces stored in individual plastic bags will help prevent oxidation and scratches. Store outside of the bathroom to avoid the steam and humidity dulling or rusting them prematurely. ... The humid environment will speed up the oxidation process and cause jewelry to tarnish faster. "The accumulation of dirt, bacteria, oil or fogging in jewelry can affect your skin," says Dr. Peredo of Quora... But there is at least one good reason not to sleep on your jewelry. "Wearing your jewelry while you sleep is the number one cause of losing precious stones and abrading the barbs!" For inexpensive Sterling Silver jewelry repairs and sizing, we recommend Sears Jewelry Repair.