demantoid

[dih-man-toid]

noun

Mineralogy.

1. a brilliant green variety of andradite garnet, used as a gem.

demantoid

/ dɪˈmæntɔɪd /

noun

1. a bright green variety of andradite garnet

Word History and Origins

Origin of demantoid¹

1890–95; < German, equivalent to (obsolete) Demant diamond (< Middle High German diemant < Old French diamant ) + -oid -oid

Word History and Origins

Origin of demantoid¹

C19: from German, from obsolete Demant diamond, from Old French diamant + _-oid

Example Sentences

The other notable sale was a rare antique Renaissance Revival suite of sapphire, demantoid garnet and enamel jewelry attributed to Louis Comfort Tiffany for Tiffany & Co Tiffany & Co., circa 1920.

Read more on Forbes

The hardness is only 6.5, or lower even than that of quartz—a character rather adverse to the use of demantoid as a gem.

Read more on Project Gutenberg

The green garnet that is called "olivine" in the trade also approaches diamond in luster, hence the name "demantoid," or diamond like, sometimes applied to it.

Read more on Project Gutenberg

It sits within a scrolling frame suspending a flexible swag, accented by circular and oval-cut demantoid garnets and sapphires, highlighted by enamel floral sprays and suspended from a chain of floral links.

Read more on Forbes

As was explained under garnet, jewelers frequently use the term "olivine" to designate demantoid garnet.

Read more on Project Gutenberg