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Natrolite — specimen 0588, photo © NMNHS
Natrolite
—
specimen 0588
Origin
North America
USA, New Jersey, Somerset County, Bound Brook
Data
Weight:
1.03 ct;
size:
9.08 | 4.90 | 3.82 mm;
shape:
octagon;
colour:
colourless;
clarity:
eye clean;
cut:
very good;
treatment:
none.
Notes
Very clean specimen; very good step cut style. Recut by
Multicolour Gems Ltd
.
More information from ‘Classification’
Natrolite
In cavities in
basalts
and related
igneous rocks
; fills seams in
granite
,
gneiss
, and
syenite
(
Anthony et al., 2001—2005
). Faceted specimens are very rare.
Gemmology — gemstones
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