-
secondary hues in
tanzanite are blue and violet.
Untreated tanzanite is a
trichroic gemstone,
meaning that
light that
enters this
anisotropic crystal gets...
- Fe-analogue (Fe, Mg) to
grandidierite (Mg, Fe).
Grandidierites display strong trichroic pleochroism. That
means that it can show
three different colors depending...
- in the
gemological nomenclature. Alexandrite, a
strongly pleochroic (
trichroic) gem, will
exhibit emerald green, red and orange-yellow
colors depending...
- that
splits light into two
beams of
differing wavelength (colour). A
trichroic prism ****embly
combines two
dichroic prisms to
split an
image into 3 colours...
-
commercial title of "dichroic" can also
display three or more
colors (
trichroic) and even
iridescence in some cases. The term
dichroic is used more precisely...
-
camcorder noteworthy for
being the
first handheld camcorder to
feature trichroic imaging. It was
released to the
North American market in 1992 at a street...
- = 1.638 – 1.650
Birefringence δ = 0.009 – 0.010
Pleochroism strongly trichroic 2V
angle 71–86°
Dispersion r < v
strong Ultraviolet fluorescence non-fluorescent...
- = 1.720 – 1.725 nγ = 1.727 – 1.734
Birefringence δ = 0.012 – 0.016
Pleochroism Trichroic,
colorless to pale blue to blue 2V
angle 78°–83° References...
- Orthorhombic, monoclinic, and
triclinic crystals can show
three and are
trichroic. For example, hypersthene,
which has two
optical axes, can have a red...
-
Diaphaneity Translucent Specific gravity 8.16
Optical properties Biaxial (+)
Refractive index ncalculated = 2.29 – 2.3
Pleochroism Trichroic References...
