This trendy stacking ring features a 4-mm tube set cubic zirconia stone. The band is solid .925 sterling silver. The cubic zirconia is available in a number of colors, so it can be used as a birthstone stacking ring. The available colors for cubic zirconia are shown in the last picture. Please leave a note during checkout or email me with your stone choice. • All elements of this ring are sterling silver. The band is sturdy enough to be worn daily. • Love the ring but have a different design in mind? Please contact me as I have an extensive stock of sterling silver in different patterns, as well as a huge variety of gemstones to match your taste.• All my designs are custom handmade by me with love and care using traditional metalsmithing techniques in my studio ♥FAQ• All orders are elegantly packaged and ready to gift. Unless otherwise specified multiple items in an order with be combined into one gift box.• Still have questions? Feel free to contact me for more information or if you would like me to custom design something for you. I love custom orders!PRODUCTION ∙ T I M E • All items are custom made to order after purchase. My current turnaround time is 7 - 10 business days. Please check my main shop home page for updates on shipping times. • Can't Wait?: Please contact me and I would be pleased to work with you to meet your deadline. There is also an option during checkout to choose a faster shipping method, but this does not change the production times listed above unless we have talked about this prior to purchase.