This beautiful Blue Zircon Swarovski® Crystal Birthstone is the perfect gift for a mother or grandmother of a child born in the month of December. Birthstone crystals are wonderful additions to accent and highlight jewelry; to include, necklaces and bracelets. Swarovski® has been a premium brand for the finest crystal since 1895, and they are produced according to the innovative, lead-free, Advanced Crystal standard. Pendant does not include a chain. If you would like for us to add Swarovski® crystals to a necklaces and bracelets, just call our customer support team at 800-326-7882. Our office hours are Monday to Friday from 9:00 to 4:00 CST.