Buff top cabochon
Style of stone cutting where the top of the gemstone is a dome (en cabochon) and the pavilion is faceted
Bulla
Two concave plates that form a hollow receptacle, a form used in ancient jewelry ...
Buff Top: Stone cut with cabochon crown and faceted pavilion.
Burma Ruby: A variety of corundum found in Burma (Myanmar) known for its vivid pinkish-red hue and strong fluorescence in ultraviolet light.
Buff top cut
A cabochon variant for transparent gems, the buff top cut mixes a faceted cut with a non-faceted cut.
Buff top
A stone cut into a flat dome shape with no facets, the bottom is usually facetted for better brilliancy. Many time the crown from the facetted stone is polished to a buff.
as 'modern cut' or 'full cut' Briolette A teardrop shaped stone faceted with triangular or rectangular facets, sometimes pierced at the top, also known as 'drop-cut' Bronze An alloy of approximately 8 parts copper to 1 part tin Buff top ...
Less frequently seen variations of the faceted gem are buff tops, briolettes, concaved cuts and fantasy cuts. A buff top gem has a faceted pavilion with a smoothly domed (cabbed) crown.
The table may take many geometric forms, dependent on the shape and style of fashioning. On a round brilliant-cut diamond, for example, the table forms an octagon. However, certain styles of cutting, such as checkerboards, buff tops, or roll tops, ...
 See also: Crystal, Beryl, Pavilion, Cut, Briolette
  
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