✧Material: The main stone is cushion cut, has fine hand polishing and prong setting. Weight of 1 carat (5*5mm). The necklace is made of 925 silver plated with 18K rose gold, 18" in length, and 2" extension will fit comfortably around the neck size. ✧ S925 sterling silver: The chain of this gemstone necklace is made of solid S925 sterling silver, thickened with 18K Rose Gold Plated, difficult to break, and doesn‘t turn colors. 100% hypoallergenic, lead-free, and nickel-free. ✧ September Birthstone Necklace - The royal lab grown sapphire symbolizes confidence and perseverance, wisdom, courage, wealth and honor. ✧ Occasion: Lab grown sapphire jewelry is the perfect gift idea for a woman, wife, mother, sister, girlfriend, bride, daughter, granddaughter, friend, or yourself on an anniversary, wedding, engagement, birthday, date, Valentine's Day, Christmas, Hanukkah, and more. ✧ AFTER-SALES SERVICE: We offer a 90 DAYS “NOT ARTIFICIAL DAMAGE” FULL REFUND OR FREE REPLACEMENT GUARANTEE. Your satisfaction is our service purpose. If you have any questions about the birthstone jewelry, pls feel free to contact us.