Product Detail Material: 925 Sterling Silver, 14k/18k Solid Rose/White/Yellow Gold, Platinum Gemstone: 5x10mm Shield Cut Lab Alexandrite The necklace length can be adjusted from 16 inches to 18 inches Custom Service 1, Gemstones can be replaced with others. 2, All metal can be made. 3. All necklace lengths can be customized. 4, The pendant/necklace can be made according to the design you want. Please contact us if you need any personalized custom pendant/necklace. We will try our best to meet your needs. Only you can't think of it, we can't do it without us. Shipping It's made-to-order jewelry, it will take 2-4 weeks to make it. Once the pendant/necklace is finished, it will be sent by USPS, FedEx or DHL. Return & Refund There is a 30-day return guarantee. But as it's handmade pendant/necklace, handcrafted fee and shipping fee need to be deducted. However, we are pretty confident you will love it when you receive the lovely pendant/necklace.