The ribcage pendant has great detailing without being too heavy. It is on a snake chain with a lobster claw clasp. Pendant is 1 3/4" long, the chain is 20".
The 1 1/2" silver tone brain pendant is on a 17" gunmetal snake chain. The chain is finished with a lobster claw clasp. The brain has a bit of weight to it, but it's hollow so it isn't overly heavy.
The heart pendant is solid and has great details. The stainless steel chain can be worn up to 18" and has a lobster claw clasp.