assembled stone

assembled stone

[ə′sem·bəld ′stōn]
(materials)
A stone made of two or more gem materials, whether genuine or imitation.
References in periodicals archive ?
In addition, the doublets will show a peculiar behaviour in the polariscope, with no distinct extinction, which points toward an assembled stone.
Skillfully assembled stone by stone with no mortar, they have the intricacy of lace when backlit by the sun.
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