Grit is powdered natural or synthetic minerals of differing hardness used as an abrasive to smooth and polish gem materials. 200 grit and water may be the first grinding, followed by a no. After the second grinding the surface has a frosted finish it is ready to polish.
- dating science fair project ideas
- updating bios with a thumb drive
- interracial dating meetup
- best singapore dating website
- why am i not dating quiz
The purpose of cutting a gemstone is to maximize the beauty.
In general, transparent gemstones are faceted to enhance interaction with light, thus improving the brilliance (amount of light reflected), scintillation (sparkle and flashes), and fire (spectral colors).
The general outline, or shape as viewed from above, is circular, oval, rectangular, heart-shaped, or irregular.
The single cabochon has a convex or arched up top and flat base.
Fashioning gemstones is accomplished by a diamond cutter or lapidary who carves or engraves, tumbles, cuts en cabochon or facets gem materials.
Carved gems have the entire gem cut into a design, while engraved gems simply have a design cut into the gem.The reverse cabochon, although rarely seen, has the convex top with a concave or depression in it and flat bottom.Cabochons are fashioned using sawing the rough, grinding, sanding, and polishing.When water is added to the center of the moving plate, the resulting slurry grinds and polishes the sawn specimens to a flat surface.These slabs could be finished as book-end sections or readying the specimen for cabbing.The hollow cabochon has a convex top and flat bottom, but the dome is hollowed out and polished.