These pictures of popular jewelry chains -- including box chains and wheat chains - can help you visualize jewelry when you read descriptions online.
Etro 2007 - Chain Maille and Leather Bag
Art Jewelry Elements: Fun With Chain (and No Soldering!) - several fun handmade chains
Lee Angel Valerie Earrings~ooh and i'd love angel like earrings too :)
Necklace Chains, Clasps and Clasp Assembly. Good Reference for writing Jewellry Product Descriptions.