You are admiring a spectacular specimen, a Spondylus variegatus (Lamarck, 1819) measuring 68.2mm...awesome "Spiny Oyster" form w/beautiful long & thinly sharp spines & an incredible color pattern is displayed...an amazing specimen.  This beauty was collected by fishermen at 10-25m off Olango Island, Philippines.  A member of the Spondylidae family which includes all Thorny Oysters & a longtime favorite of mine & collectors worldwide.  This one will be an outstanding display piece as well as a wonderful addition for your collection.  Thank you for visiting our store this afternoon...and an excellent choice, too.