Origin of demantoid
Examples from the Web for demantoid
Perhaps the adoption of the name "Demantoid" might relieve the situation.
The demantoid garnet (sometimes called "olivine" in the trade).
The luster, too, is diamond-like as the name "demantoid" signifies.
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.
The demantoid garnet is also very soft as compared with emerald (61⁄2 as against nearly 8).