Thank you for viewing. Metal allergy対応 (compatible) - Color: Gold - Chain Length: Adjustable - Package: Comes with original box This is a simple gold necklace that combines AAA zirconia and Japanese shell pearls with gold balls. It features high-quality brilliance, using AAA zirconia, which has a refractive index extremely close to that of diamonds, and Japanese shell pearls with a luster like genuine pearls, made from natural shell nuclei. To make the zirconia shine even more beautifully, this piece is carefully crafted with attention to detail, such as using a silver925 base with K18 gold finish. ※※ Japanese shell pearls, also known as traditional crafts, are pearls artificially formed with a pearl layer using natural shell nuclei as the original bead. They are carefully polished by hand by craftsmen, have a luster like genuine pearls, and have a moderate weight like genuine pearls, making them suitable for formal occasions. They are also more durable than genuine pearls. ● The chain, gold balls, and other metal fittings all use surgical stainless steel, which is low-allergenic and rust-resistant. (Surgical stainless steel is a material that is resistant to rust and is unlikely to cause allergies, as it is also used in medical instruments.) I received this as a gift, but it is new and unused. I have opened the box once, so please consider this when purchasing.