Marra Mamba Tiger's Eye Slab - Blue Crocidolite seams, Hamersley Range in the Pilbara region of Western Australia. ( This source was mined out over 20 years ago. True Marra Mamba Tiger's eye comes only from this area and is extremely rare.
Tourmaline (dravite) crystal exhibiting the Usambara effect from Nchongo, Umba Valley, Tanzania. Usambara color change is different from "alexandrite effect," which is color change dependent on type of light.
chrysodrusy Sparkling specimen of Quartz drusy over Chysocolla! The specimen is perfectly centered and unblemished with a dazzling flash under any lighting. From the Ray Mine, Mineral Creek District, Pinal County, Arizona. Measures 6 cm by cm in size