[China Glass Net] Because the ore of the ice crystal Obsidian itself is a rare ore resource, in the 10,000 tons of obsidian ore, only one hundred grams of ore can reach the ice crystal level and become an ice crystal obsidian. So now there are a lot of glass products on the market to make fakes, and sell them with glass as ice (ice crystal) obsidian products.
Now let's subdivide the ice species [ice crystal] obsidian, the difference between the two:
Ice species [ice crystal] The distinction between obsidian and glass 1. Obsidian, also known as Tokachi, is a naturally occurring glass. Its cause is because the volcanic lava cools and condenses rapidly, and the crystal structure does not have enough time to grow. Because the lava flow cools faster, the obsidian is usually found on the periphery of the lava flow. Main components: silica, hardness: 5, specific gravity: 2.339-2.527, refractive index: 1.48-1.51, water content 1-2%, chemical composition is SiO2 (H2O).
2. Ordinary glass is mainly amorphous silica (SiO2), that is, quartz, or the chemical composition of sand. The pure silica melting point is 2000 degrees Celsius. Therefore, two materials are generally added when manufacturing glass: sodium carbonate (Sodium Carbonate, Na2CO3, that is, soda powder) and potassium carbonate (potash, potash). This silica melting point will drop to about 1000 degrees. However, since sodium carbonate dissolves the glass in water, it is usually necessary to add an appropriate amount of calcium oxide, CaO, to make the glass insoluble in water.
Ice type [ice crystal] black diamond and glass certificate distinction [ice crystal obsidian certificate] enlargement check: visible natural inclusions.
Main stone name: Black Rock [Glass Certificate] Enlarged inspection: internal clean or flowing structure, air bubbles. Main stone name: glass flower piece or glass pendant ice type [ice crystal] the color distinction between obsidian and glass (this can only be used as a definitive basis for identification) Ice crystal obsidian color: ice crystal obsidian is dark brown black under natural light, transparent . The color is more positive. Strong gloss. The color of the glass made by people: the color is lighter and lighter brown, and there is no difference in different light. The color is dark and dull.
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