BRILLIANT DIAMOND
\bɹˈɪlɪənt dˈa͡ɪ͡əmənd], \bɹˈɪlɪənt dˈaɪəmənd], \b_ɹ_ˈɪ_l_ɪ__ə_n_t d_ˈaɪə_m_ə_n_d]\
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So called from the effect of the facets, 56-64 generally, with upper octagonal face, into which it is cut ; only a good stone being thus treated. Rose D., broad in proportion to their depth, have a flat base, with two rows of triangular facets, and six uppermost, uniting in a point. Stones still thinner are cut as Table D.
By Henry Percy Smith
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.