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 Gulf Stream Blue Shark Medallion Only Bright Finish 35mm. Medallion Only with shackle. Add this to your existing chain or swap out your existing medallion for another. Guy Harvey signature insignia on reverse side of medallion.