1) Cut diamonds 2) Having facets 3) Having plane sides 4) Like a cut gem 5) Like cut diamonds 6) Like many diamonds 7) Like many gems 8) Like some gems 
• (imp. & p. p.) of Facet • (a.) Having facets.
A faceted stone has small, flat-cut surfaces that make a sparkling effect on transparent stones. Facets act as both mirrors and windows. Reflecting light and channelling light into a stone where it refracts and re-emerges.
a term used to mean that the flat faces of a polyhedral form have been replaced by inverted pyramids. A skeletal model can be considered to be a faceted form. (See also dimpled.)
Fac'et·ed adjective Having facets. 
[adj] - having facets
adjective having facets; `a faceted diamond`
Is an attribute of a processed gemstone that has been cut and polished in order to have multiple flat surfaces. This is a process usually reserved for hard stones like diamonds, sapphires, rubies, emeralds, materials that are unlikely to be scratched.