Optical fiber is a term for any sort of plastic or glass conduit meant to transport light. The principles behind it are actually quite old, but in recent years it has become an incredibly important technology, as communications infrastructure has begun to use this fiber to transmit data at extremely high rates.ptical fiber is a term for any sort of plastic or glass conduit meant to transport light. The principles behind it are actually quite old, but in recent years it has become an incredibly important technology, as communications infrastructure has begun to use this fiber to transmit data at extremely high rates.
Kirinite knife handles. Kirinite is a really interesting new handle material that has emerged in the past ten years or so, and made a big splash in the world of knife handles and gun grips.Itâs made from âa toughened acrylic with very thin colored strands of poly paper swirled through the mix.â And the results are things like this:nother plus in the aesthetic side of things, as far as kirinite goes, is that it takes a fantastic polish without becoming slick and hard to grip. To get that smooth of a finish on a wood handle you have to put some type of finish on it to fill the grains, which is a lot of hassle.
Red equant grains in mica schists belong to iron-rich garnet almandine. Pyrope is a Mg-rich garnet that occurs in (originally) deep-seated rocks like peridotite, kimberlite, eclogite, or serpentinite.Spessartine, the manganese-rich variety of the pyralspite group, is common in magmatic rocks, especially pegmatite.ndradite is not usually green but demantoid is a green variety of andradite that owes its color to chromium that is partly in place of iron in the crystal lattice. Width of view is 30 mm. Beach sand from Sri Lanka that contains lots of heavy minerals like almandine (pink) and spinel (dark red). Width of view 20 mm.