In the coffin lay an amulet of curious and exotic design, which had apparently been worn around the sleeper's neck. It was the oddly conventionalised figure of a crouching winged hound, or sphinx with a semi-canine face, and was exquisitely carved in antique Oriental fashion from a small piece of green jade. The expression of its features was repellent in the extreme, savoring at once of death, bestiality and malevolence. Around the base was an inscription in characters which neither St John nor I could identify; and on the bottom, like a maker's seal, was graven a grotesque and formidable skull.
And here's the prop version of that very amulet, created by the talented Joe Broers:
You can find more examples of his Lovecraftian sculptures and props at his DeviantArt site.