Two kinds cuff links of white precious metals

Until 1768, the famous Swedish scientist Lin Neisi found tourmaline, people gradually accepted and adopted its current name - tourmaline. Tourmaline is the usual name of the jewelry industry in China, belong to the tourmaline family mineralogy. The chemical formula for XR3A16B3Si6O27 (OH) 4, where X is Na, K, Ca, the R for a variety of metal ions, the R type and content of a direct impact on the color of tourmaline. The differences between platinum and K white gold cufflinks are as follows.  Trigonal system. The crystals were complex tripartite columnar. The color variety, colorless, rose red, pink, red, blue, green, yellow, brown and black, etc., which is blue and bright red roses for the top grade. Glassy luster, transparent to translucent, refractive index is generally 1.624-1.644, birefringence 0.018-0.040, dispersion 0.017.
 With strong pleochroism. Hardness 7-7.5, density 3.06-3.26 g / cc. No cleavage, conchoidal fracture. Tourmaline also has piezoelectric and piezoelectric properties, this is also the origin of the name of tourmaline. The difference between tourmaline and similar gem cufflinks. Red tourmaline gemstone cufflinks ruby, red spinel, spodumene, pink topaz, red beryl, lavender crystal and so on. With green tourmaline gemstone cufflinks diopside, emerald, green beryl. Blue tourmaline gemstone cufflinks with a blue spinel. Two kinds cuff links of white precious metals popular on the market are platinum and K white gold. Tourmaline and its difference is the apparent double shadow: tourmaline edges at more of the fluid inclusions and fractures, dichroism and strong, good transparency, its density and refractive index rates are quite different, the birefringence.
Evaluation and selection of tourmaline. Tourmaline color, transparency, internal defects, the number and weight as a basis for evaluation and purchase. Note: When you purchase tourmaline transparency is better, the surface has a glassy luster, the same crystal color is uneven, less internal defects (inclusions and fractures). It is difficult to identify the differences of the cufflinks by the naked eyes.  Tourmaline has a brittle, wear should be taken to avoid collision. Tourmaline colorful, beautiful, varied, high transparency, since ancient times is very popular. Currently, it is second only to emerald, alexandrite, mid-range gem cufflinks. According to records, the sacrificial lambs of the Empress Dowager Cixi, one with tourmaline carved lotus, weight 36.8 money, time value of 75 million taels of silver. Tourmaline as the "October birthstone, the symbol of happiness and peace.
Tourmaline gemstone cufflinks level value prolific in strong albitization and lepidolite microcline feldspar albite Danwei Jing rock core. 50-70% of the color tourmaline from Baxi Mi that Gerais pegmatites. There the United States, Russia, Sri Lanka, Myanmar and other countries output. Produced in China's Xinjiang's Altay tourmaline, crystal clear, color, variety, and the infrared and green watermelon rind "treasures. We provide you with the methods to distinguish the mens cufflinks. The English name of the feldspar Feldspar, evolved German Feldspath. Spar is a split meaning accurately reveals the feldspar complete cleavage of the characteristics. Feldspar are widely distributed in nature, but do rare gem cufflinks, specific types of moonstone, amazonite, sunstone, and labradorite. In mineralogy, the former two are orthoclase, the latter two are plagioclase.
 Feldspar frame structure of silicate minerals are potassium, sodium and calcium. Moonstone, amazonite chemical formula for KAlSi3O8; sunstone, elongated stone as NaAlSi3O8 and CaAl2Si3O8,. Feldspar is monoclinic or triclinic system. Crystal morphology of the thick plate or short columnar aggregates for granular or massive. The white K gold cufflinks is commonly known as K white gold, a kind of alloy. The different varieties of color, colorless, white, red meat, gray, sky blue, green and golden yellow and so on. Transparent to translucent, shiny glass. Moonstone and amazonite refractive index of 1.518-1.530, generally 1.52, 0.07 of the birefringence dispersion 0.12, hardness, density 2.55-2.58g/cm3. Sunstone labradorite refractive index 1.555-1.571, generally 1.55, birefringence 0.07, hardness density 2.65-2.75g/cm3, dispersion 0.12.