Well-formed shapes are normally drilled like rondelles. These have a unique twist, they are drilled through their widest point creating a nice shape.
Since pearls are a natural material, color and size will vary. Pearls will vary in color from cream to mauve to peach in a variety of hues.
Freshwater Pearls>Grade B>Freshwater PearlBeads>Pearls>Freshwater PearlsGrade BFreshwater PearlOranges / PeachesWhite LotusFlat Round/Coin8mmhttp://www.firemountaingems.com/itemdetails/h201525plH201525PLPearl, White Lotus™, cultured freshwater, peach, 8mm flat-sided potato, B grade, Mohs hardness 2-1/2 to 4. Sold per 15" to 16" strand.//image1.fmgstatic.com/images/p1525plb.jpg17.3317.33As Low As $8.89 per strand