All Guy Harvey Signature Jewelry is inspired from the original art of Guy Harvey. Through a lifetime as an avid conservationist, artist, and marine wildlife enthusiast, Dr. Guy Harvey's art depicts extraordinary realism of marine life in their natural habitat. Featuring the Shark Necklace Black Enamel Bright Finish 35mm Sterling Silver on Stainless Steel Heavy Link Chain. Available in 18", 20", 22" and 24" lengths. Guy Harvey signature insignia on reverse side of medallion.