Turtle Pendants Necklace Assorted, Turtle Pendants - Semi - Precious Gemstones. Stone turtles. To choose a specific stone type look for the Turtle Pendant Necklace - select (priced higher). These turtles are sold individually, the quantity of 1 is one necklace, 4 is four necklaces. They are approx. 1 1/8- 1/14" from the tip of the head to the tail. There might be about 10 or more different stone types used for the turtles.