EMERALD, see BERYL
ENSTATITE
Available from India as corroded facet-grade crystals of dark greenish-brown to brown color; also showing 4-rayed star on nearly black background; faceted gems cut to 4-8 ct., but larger gems appear too dark; hard, tough, but cut only for collectors.
EPIDOTE
Abundant rock-forming mineral, sometimes cut in massive form for cabochons or for large ornamental items; facet-grade crystals cut for collectors, but while hard, are too dark to be attractive. Piedmontite is a massive variety sometimes cut in cabochons of an attractive deep rose color.
Baja California, Mexico, crystals, small clear    gm.    .15-.25
California, Kern Co., crystals with clear areas    gm.    .15—.25
Austria, Salzburg, fine clear crystals    gm.    .50-1.50
ESSONITE,   see   GARNET EUCLASE
One of the classic rarities; occurs in Brazil and Siberia in clear crystals ranging from colorless to pale straw-yellow, yellow, pale green, and blue; cleavable; cut only for collectors; cut gems over 5 ct. very rare.
Brazil, crystal sections, according to clarity and
color; blue costliest        ct.    1.50-20.00