This necklace is a web cut lab created blue sapphire, 18"cable chain, 14k white gold #6390 September Birthstone Available with other colors Use dropdown to make selection -Approximate total carat weight: 3.30ctw diamond equivalent -Center Stone Size: 9x9mm approx. 3.30ct diamond equivalent -Center Stone Shape: web cut / octagon -Gem Type: Lab Created Sapphire Corundum -Origin: Switzerland -Stone Clarity: VS2 -Stone Color: Lively, Brilliant Blue -Moh's Scale: 9 hardness -Metal Type and Purity: 14k solid gold -Setting: 4 prong basket -Chain: 18" delicate 14k gold chain / heavier option with lobster claw available (use dropdown to select) -Country of Manufacturing: USA (Michigan) For customization please contact us. If you have any additional questions, just hit the "Ask a Question" button (just to the right of the price) and we will get back to you shortly. Making your purchase means you have read and understand all of my Policies on the shop page. https://www.etsy.com/shop/InfinityJewelersUSA