This coin is made of 24k (999.9) yellow gold in 1 gm weight. this piece of jewellery is not bis hallmarked as per government norms.the product is 1.5 cm in length and 1.5 cm in width.closure type is exactly what is shown in the picture.the product will be an excellent pick for you. this is stylish, trendy and classy. it is safely packaged for your convenience, protecting it from damages.