A blue sapphire showing dichroic properties
A blue sapphire showing dichroic properties ...
Dichroic Glass beads
Dichroic glass beads are essentially beads made of Dichroic glass. Here glass is coated with several thin layers - either metal coatings or others in a vacuum.
A mineral that exhibits one color when viewed from one angle but a different color when viewed from a different. In beads it usually gives them a shimmery, iridescent, metallic look like molten metal.
A glass which contains ultra-thin layers of aluminum, chromium, silicon, zirconium or the metal alloy titanium. The colors are almost holographic in appearance.
Dichroic Glass Beads
A type of lampwork bead with a thin film of metal on its surface, allowing it to change colour as it reflects light.
A reflector that projects light forward while deflecting heat backwards, toward the socket, so the light beam itself is cool.
dichroic Of two colors; the characteristic of a transparent substance to divide refracted white light into two distinct rays.
diffraction The modification of white light as it breaks up into the color spectrum.
A property, peculiar to crystals, of reflecting light in two different colors when viewed from two different directions.
Dichroic Glass - this is a type of glass which contains multiple micro-layers of metal oxides. This gives the glass reflective optical properties.
Refers to a gem that appears two different colors or shades when viewed from different directions. Alexandrite is a dichroic gemstone because it varies from red to green in different light.
This incredibly beautiful glass of oily, rainbow iridescent colours is the result of super high-tech aerospace engineering.
Dichroic gems (like corundum) show two different colors while trichroic gems (like iolite) show three.
Pleochroism will not be observed in SR gems, nor in DR gems when looking through an optic axis direction.
Dichroic elbaite form Mozambique
Dravite tourmaline form Mozambique
The faceted orange-brown dravite in the photo above (right) is cut so that the c-axis, which is always as saturated, or more saturated than the a/b-axis, ...
Dichroic coated glass transmits some wavelengths of light and reflects others, giving it a distinctive metallic appearance.
May be dichroic
Quartz, Beryl, Apatite, Corundum, Tourmaline
3 axis lengths
All at 90° ...
Strongly dichroic with the ordinary ray having a darker color
Amethyst is dichroic, showing a bluish or reddish purple tinge when viewed from different angles. Its colour is most often caused by iron impurities, though it can also be coloured by natural radiation exposure.
In a doubly refractive crystal, a light beam reflects two different rays. The eye cannot
normally see both rays at the same time, but by moving the stone, the eye will observe
both rays. The result?
SPHENE - A Dichroic Gem
Sphene is a beautiful yellow green to green gemstone which has a very high dispersion. This means that the light which goes into the gem is broken down into a rainbow of colors, similar to diamond.
Axinite: Is a dichroic, boro-silicate of aluminum and calcium, stone that is lustrous and has translucent as well as transparent varieties.
dichroic / dichroism Literally means "two colors". A mineral that exhibits one color when viewed from one angle but a different color when viewed from a different angle is said to display dichroism.
Tourmaline is a dichroic gemstone that comes in many, many different colors; it also appears to have different colors depending on the angle at which it is seen. Tourmaline's name comes from the Sinhalese word "turmali," which means "mixed.
strong dichroic. distinctive pistachio green. Epidote is the principal member of a group of silicate minerals that occur most commonly in low grade, calcareous metamorphic rocks and also in igneous rocks, where they have altered from feldspar, ...
Axinite is dichroic. Axinite has a hardness of 7 and a specific gravity of 3.3. Axinite is a boro-silicate of aluminum and calcium. It is used only as a mineral specimen and not in jewelry.
This gemstones is strongy dichroic; although Benitoite is blue when viewed from most directions, it appears colorless when viewed in a single direction (the c-axis). Some unusual Benitoite is blue, but pink or orange when viewed through the c-axis.
The most useful is the MR-11 bulb which has a built-in dichroic reflector to focus the light forward.
Abalone shells have a dichroic, tortoise-like appearance. Native Americans in the U.S.A. and Canada often use abalone shells for smudging ceremonies.
Many minerals (like rubies and axinite) are naturally dichroic. This effect can be artificially caused by a thin layer of a metallic oxides that is deposited on the surface of a material.
Some strongly dichroic e.g. reddish violet to pale blue
"Siberian" = dark purple; "Rose-of-France" = pale purple to pink
Principle sources are Brazil and Uruguay, as crystals lining cavities in lava flows. Also found in pegmatite veins. Fine U.S.
As tourmaline is the most dichroic of gemstones, a strong multicolor effect is to be expected. However, perhaps due to its unique chemical composition and its distinctly dark tone, multicolor effect is rarely observed in the chrome green gemstone.
Blue fluorescence under short wave UV. Strongly dichroic. Named after the local (San Benito County) where it was first found (1907). This is the only site on earth where it has been found in place.
& Locals: ...
How To Incorporate Fused Glass Pieces
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Kitchen Glassware Stirs Memories - Antique and Collectible Depression Era K...
Rubber Stamped Glass Pendants ...
15. Illusion Glass Works
Illusion features handmade dichroic glass beads, jewelry, tiles, drawer pulls, buttons, bracelets, necklaces, earrings, pins, watches, cufflinks, wall art, and feng shui adjustment crystals.
These typically consist of an excitation filter selecting the range of excitation wavelengths, a dichroic mirror, and an emission filter blocking the excitation light.
The true oriental amethyst or purple sapphire is occasionally met with of a full tone ; it is an interesting and beautiful stone, strongly dichroic, and often made up of alternate layers of ruby and sapphire.
It has both transparent and translucent varieties. Axinite is dichroic. Axinite has a hardness of 7 and a specific gravity of 3.3. Axinite is a boro-silicate of aluminum and calcium. It is used only as a mineral specimen and not in jewelry.
Bi-colored and multicoloured tourmalines may be green at one end and pink at the other, watermelon tourmalines are green on the outside and pink on the inside. Some stones are dichroic meaning they appear to change color when viewed from different ...
The pearly interior of a mollusk shell. This is a member of the sea shell family and is also known as the "ear shell". Abalones have a dichroic, tortoise-like appearance.
Now, thanks to the scientific workers, there has been devised a relatively simple and comparatively inexpensive instrument called the dichroscope, which enables one to tell almost at a glance whether a stone is or is not dichroic.
These are called Dichroic. The most coveted hues are blue, green, and pink. Tourmaline is durable, rating a 7 to 7.5 on the Mohs Scale. Pink or red tourmaline is an alternative birthstone for October.
See also: Stone, Color, Crystal, Jewel, Gemstone