This is a necklace made with Hotaru glass. The Hotaru glass stands out against the simple black faux leather cord. It will be a great accent to your fashion. Necklace inner circumference: Approximately 45 cm Adjuster: Approximately 5 cm Teardrop: Approximately 2 cm long, 1.2 cm wide This was made with care, but it is a handmade item. Please purchase only if you understand that it is a handmade product.