| Those made under Perkhin tend to be in the rococo Louis XV style and often have bodies of hardstones such as nephrite or bowenite. |
| Reflecting his dominant emphasis on design rather than gemstones for visual impact, Tiffany chose beads of nephrite for the grapes. |
| Of the two kinds of jade, jadeite and nephrite, the former is harder than the latter and cannot be scratched with a penknife blade. |
| Until recently few people considered Wyoming to have potential for gemstones other than nephrite jade. |
| Hewn from jade, nephrite, marble, and hardstone, the oddly shaped blades lack an obvious prototype in any functional tool or weapon. |
| These include Neolithic tools made from chalcedony as well as nephrite objects from Ancient China. |
