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Some keepsakes were harder to reproduce than others, though, including the uniquely shaped uncut mineral-green diopside pendant encased in a heavy gold setting that her father gave to her mother as an engagement present in 1969.

Greek jewelry designer Ileana Makri's graceful multi-shaped branch ear cuff is made of 18-karat gold set with round yellow sapphire, square rhodolite and oval chrome diopside with pear-shaped orange sapphire.

The purer beds recrystallize as marbles, but where there has been originally an admixture of sand or clay lime-bearing silicates are formed, such as diopside, epidote, garnet, sphene, vesuvianite, scapolite; with these phlogopite, various felspars, pyrites, quartz and actinolite often occur.

Diopside, dī-op′sid, n. a grayish and readily cleavable variety of pyroxene.

The augite is mostly a variety of diopside and is only occasionally idiomorphic.