This elegant Celtic knot moon necklace symbolizes love and eternity, making it a perfect 40th birthday gift for her. Crafted from 925 sterling silver with a sparkling heart crystal, it is hypoallergenic, anti-rust, and free from nickel, lead, and cadmium. The pendant measures 0.86 inches (22 mm) with a 45 cm chain and a 5 cm extender, ensuring a comfortable fit for anyone. Presented in a beautiful jewelry gift box, it’s an ideal present for birthdays, Christmas, Mother’s Day, or anniversaries. Celebrate this milestone with a timeless piece that conveys your everlasting love. If any issues arise, our customer service ensures a worry-free purchase experience.