Eclipse features an oversized, rose-cut and dome shaped black onyx set in 18k gold vermeil. A simple and elegant statement piece! The pendant's diameter is 27mm and the black onyx is a whopping 50 carats! Choose a chain to suit you from our choker style snake chain to our 30" long cable chain. All our chains are adjustable (2 inches). The base metal of all our jewellery is 925 sterling silver. Vermeil means that sterling silver is plated in at least 2.5 microns of gold or rose gold. Ours is at least 3 microns of 18k gold / rose gold which makes for a really thick coating of gold / rose gold on sterling silver.