This contemporary necklace is handmade with 3 graduated rings in 24k yellow gold Vermeil*, Sterling silver and rose gold Vermeil* The rings measure approximately 18mm, 15mm and 10mm diameter. The Sterling silver snake chain is 16 inches/40 cm long. Please do not hesitate to contact me if you would like a longer chain.* About Vermeil - The "Circle of Life" collection by NAIIAD is available with 24k yellow or rose gold plated over Sterling silver. The thickness of gold plating is 2.5 to 3 microns according to industry standards for the label Vermeil.