The phrase identifies probably the most appropriate mineral specimens for reaching a refined and aesthetically pleasing outcome by means of a mechanical abrasion course of. Examples embrace forms of quartz like agate, jasper, and amethyst, in addition to obsidian and sure varieties of widespread rock. These supplies are chosen for his or her hardness, constant composition, and skill to take a excessive shine.
Deciding on applicable geological supplies considerably impacts the standard of the completed product. The fitting decisions result in extra sturdy, visually interesting polished stones, enhancing their potential to be used in jewellery, crafts, or accumulating. Traditionally, the observe of sharpening stones dates again millennia, with civilizations throughout the globe using totally different strategies to boost the pure fantastic thing about rocks and minerals.
