Laser Cut Acrylic...
Necklaces are made from laser cut acrylic , with a brass circle folded over the top to make a semi circle shape. Chain length either side hanging down is 22cm, so approx full length of chain is 46/48cm with clasp also.
Looking after your necklace : Brass wares naturally over time, and can look better with age, but it can be polished to retain its look if wanted. Do not get this item wet or the brass may tarnish. Also its wise to store your brass jewellery away from damp conditions in bathrooms etc.