briolette
noun
bri·o·lette ˌbrē-ə-ˈlet 
: an oval or pear-shaped gemstone cut in triangular facets
Example Sentences
Recent Examples on the Web The necklace includ-s briolette-cut colored diamonds, fancy shaped quartz, wood, druzy geode slices and 18-karat gold. 
Carol Besler, Robb Report, 21 June 2021
Carol Besler, Robb Report, 21 June 2021 Word History
Etymology
French
First Known Use
1865, in the meaning defined above
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