use all natural stones and shells, handmade: cut, slice, dice w/6" diamond saw & blade., drilled w/demel drill & press w/dental burs 330 bit. Pattern colors are strong rough on #9 piano wire and 1/4" copper disc with our initials"LC" or "GC" stamp for our trademark, grinded on 8" grinding wheel w/5 different sanding belts starting w/60grit to grind rough edges, 400 & 600 grit are used to sand down and1000 grit to finish sanding, than polished finished on leather belt using zam polishing compound to bring out high gloss. Final Finished are than strung on tiger tail 7 strands of wire w/ plastic coding, sturdy. Sterling silver clasps, for multi strands silver chains for adjusting and cones are used. Some 10 strand necklaces are strung on 3 ply wax string or 3 ply nylon string.