Our Black Marlin pendant "Istiompax indica" is a member of the Istiophoridae family endemic to the Indian and Pacific Ocean, a larger relative to the Indo-Pacific Blue Marlin, then simply called "Blue Marlin". it is one of the largest marlins and also one of the largest bony fish in the sea.The Black Marlin pendant is a part of the highly sought after “Offshore Collection” and is offered with assorted shackle bale sizes to accommodate a variety of necklaces (Inner Diameter S-5mm, M-6mm, L-9mm, and XL-11mm). Our pendants are custom designed with anglers in mind, as hand carved originals cast and finished with the highest quality .925 sterling, .935 Argentium non-tarnish silver, 10k, 14k, or 18k gold and set with a genuine precious stone (your choice of Ruby, Sapphire, or Emerald). The Black Marlin dimensions are as follows: Length: Small (44mm)/Medium 56mm/Large (68mm) Weights are approximately: Silver=14g, 10k=15.6g , 14k=18g, 18k=21.1g (May vary based on Shackle bail sizes) Best bought with light or medium Custom Swivel Link Chain, light or medium Mariner link, light or medium Anchor Puff chain. Unless other wise requested all pendants are set with genuine Sapphire gemstones. Standard Shackle Bail fits a 6mm chain. Check out our Offshore Collection to see more Billfish species including Spindlebeak Sailfish, Broadbill Swordfish, and Marlin (White Marlin, Black Marlin, Blue Marlin, White Marlin, Striped Marlin) species, with both anatomical composition, and in action. Made in America by Anglers for Anglers *Precious Metal prices may vary dependent on market spot price.** Enamel is available upon request as illustrated on all Fish pendants for an additional $75