Donna, Absolutely the best example of instruction in the basic
crochet technique is in Alan Revere’s book “Professional
Goldsmithing”. This type of structure is a hollow round spiraling
construction and has many possibilities for variations. There are
also several different examples of clasp mechanisms to complete your
necklace with in the book as well. Good luck, and happy crocheting!
Michael David Sturlin, jewelry artist email@example.com
Michael Sturlin Studio, Scottsdale Arizona USA