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Before the introduction, let's do a few test questions and self-test the understanding of the green gems in the colorful gems:
1. Please select all of the following gems with green tones:
A emerald B tourmaline C garnet D topaz
2. The emerald that you are familiar with belongs to the following mineral name:
A gold emerald B corundum C beryl D feldspar
3. What is the difference in color between savory stones and emeralds that belong to green gems?
A. The saffron stone is bright in color and yellow in color.
B. Shafele stone is darker in color and yellowish in color.
C. Shafley stone has a bright color and a greenish hue.
D. Shafley is darker in color and greenish in color.
4. Which of the following places is considered to be the most productive emerald producing area?
A Zambia B Brazil C Colombia D Zimbabwe
5. With diamonds, rubies, sapphires and called the world's four famous gems?
A Jade B Emerald C Tourmaline D Gold Emerald
6. The following description of emerald is correct?
A. The emerald has a high hardness and is not afraid of colliding with metal.
B. The crystals of emeralds are small and sturdy.
C. Emerald does not require maintenance, it does not matter if you wear it in a place with soot.
D. Ultrasonic cleaning can be used when cleaning emeralds.
7. If you see the following four gems in the store, which one is most likely garnet?
A.4ct yellow green gemstone
B. Internal multi-cracked cotton green gemstone
C. Produced in Brazil, often columnar dark green gemstone
D. High dispersion, high dispersion rate, green gemstone with ponytail inside
8. With the special effect of Dabbitz on the picture below, which of the following green gems might be?
A garnet B Shafley C emerald D Jasper
Answer: 1.A/B/C2.C3.A4.C5.B6.B7.D8.C
I don't know everyone's self-evaluation, what is the result?
Among the huge family of green gems, there are many famous members. The more famous emeralds are emeralds, and then there are green tourmalines, saffronites, garnets, chrome diopsides, peridotes, etc. In this star-studded family, how can we separate them one by one?
Xiaobian is a brief introduction to make it easy for everyone to identify them.
Emerald:
Density g/cm 3 : 2.72
Hardness: 7-8
External features: 1. Pure green; 2. It has dichroism, that is, the gemstones will show emerald-cyan or yellow-green at different angles.
Internal features: most of them have flaws and cracks, and most of them are cotton-like
Remarks: Low output and high value.
Garnet:
Density g/cm 3 : 3.84
Hardness: 7-8
External features: 1. Green color; 2. High dispersion, high refractive index; 3. Fire is very strong.
Internal features: the interior of the horsetail filamentous asbestos mineral inclusions
Remarks: low output, high value
Shafley:
Density g/cm 3 : 3.61
Hardness: 7-8
External features: 1. The color is yellowish green compared to the emerald; 2. The yam diamond gloss, higher fire color.
Internal features: the interior is relatively clean.
Remarks: The output is more than emerald, the value is slightly lower than the emerald
Green tourmaline:
Density g/cm 3 : 3.06
Hardness: 7-8
External features: 1. The color is from light green to dark green, yellow green or brownish green; 2. has dichroism; 3. the overall tone is dark, not bright enough.
Internal features: clean interior, even linear inclusions
Remarks: The output is large and the value is medium.
Peridot:
Density g/cm 3 : 3.34
Hardness: 6.5-7
External features: 1. Higher birefringence; 2. Green hue overall yellowish; 3. Hardness is not high.
Internal features: the interior is relatively clean.
Remarks: The output is large and the value is medium.
Chrome diopside:
Density g/cm 3 : 3.29
Hardness: 5-6
External features: 1. High clarity; 2. Color green, the closest color to emerald.
Internal features: clean interior, occasional filamentous inclusions
Remarks: The output is large and the value is low.
According to the above introduction, it is recommended that you can identify the following aspects when purchasing:
1. The difference between internal and external features: (1) the color is yellowish green: garnet and olivine; the fire is good, the garnet is almost the olivine; (2) the color is pure, the interior is cracked: emerald; (3) Pure color, clean interior: saffron and chrome diopside; chrome diopside fire color is worse than Shafley; (4) dark color: green tourmaline.
2. Price: in the case of consistent quality, weight, etc., emerald > garnet > saffron > green tourmaline > olivine > chrome diopside
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