These Specimens are Green Sapphire

The artist has paired them with many  various cut Gemstones to bring the energy of that stone to the pair of Earrings

The Wesier Field Guide to Ghosts examines categories and subcategories of ghosts across time and cultures

but rather as an overall personification of death

so you get the best of both worlds

CMON Rum & Bones: Second Tide Sea Monsters 9780988179004 These Specimens are Green SapphireDescription Contains 9 Kraken Tentacle miniatures and 1 Sea Dragon miniature. These miniatures replace two tokens from the game. They do not change game play. They come packaged separately (with their own product number) and while they were part of the Kickstarter bonus stuff, they were also available for purchase separately.