Packaging Details
- Unit Type:piece
- Package Weight:1.0kg (2.20lb.)
- Package Size:10cm x 10cm x 10cm (3.94in x 3.94in x 3.94in)
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Genuine jewellery two color mirror / Iceland two color mirror / GEMSTONE two color observation instrument / jewelry testing instrument
Instrument principle:
Many birefringent gems can be seen in different colors in different directions. This phenomenon is called polychromatism. By using the strong birefringence of Iceland spar, we can observe the polychromatic properties of precious stones in the vertical axis of the precious stones.
Two, operation instructions:
Wipe the surface of the gem clean, observe the first slowly rotating dichroic mirror, if two adjacent visual field color is the same, should rotate the gem, change an azimuth observation. If the azimuth of the gem is changed many times and the color of the two adjacent Icelandic stone windows is the same, the gem can be considered to have no dichroism.
Three, matters needing attention:
1Sample requirements: single crystal, transparent to translucent, birefringent gemstones with color;
2A white light source, such as natural light and incandescent lamp, can not be used with monochromatic light. The distance between eyes, two color glasses and precious stones should not exceed the observed distance.2~5Centimetre.
3Rotating gemstones or rotating two color glasses360Observe the three colors of precious stones in multiple directions.
4Attention should be paid to the distinction between uneven colors and ribbons of gems: two colors observed with the naked eye in the same direction should be ribbon characteristics, not dichroism.
5Jade is the aggregate of many fine mineral crystals. The dichroism interferes with each other and cancels out. The dichroism can not be observed.
Four, two colors of common jewels
Strong two Color Gemstone |
Treasure stone name call | Pigments colour | Treasure stone name call | Pigments colour |
红Treasurestone(including artificial products) | Red and Huang Hong | Blue colour topaz | Blue and light blue |
蓝Treasurestone(including artificial products) | Blue and blue green | Orange colour topaz | Orange and light yellow |
黄colour蓝Treasurestone | Yellow and yellow white | Golden greenTreasurestone | Brown and light yellow |
绿colour蓝Treasurestone | Green and yellow green | 变stone | Green and red |
Purple colour blue Treasurestone | Violet and light purple blue | Electrical stone class | Deep colour and light colour |
Aqua Blue Treasurestone | Blue and blue white | Tanzanstone | Deep blue and purple |
Weak two colourTreasurestone |
Treasure stone name call | Pigments colour | Treasure stone name call | Pigments colour |
Emerald | Green and yellow green | Olivestone | Yellow green and light yellow |
Green columnstone | Weak difference | Hibiscusstone | Pink and light powder |
zirconiumstone | Weak difference | Amethyst | Purple and light purple |
No two Colourful Treasurestone (various Pigmentscolour) |
King Kong stone; natural and artificial spinel stone; various stone grenades; cubic zirconia; glass; YAG |
Five.Instrument selection and maintenance:
The two windows of the high-quality ice continent stone two colour mirrors should be adjacent parallel, the spacing is the thickness of the window edge lines, and the distance cannot be wide or even partially overlapped.
This instrument is an optical product. It is strictly prohibited to disassemble privately, prevent high temperature, dust and fall.