The magnificent and exquisite ruby ​​necklace has always been the girl's favorite, worn on the body, can give extra points to their beauty, exudes more fascinating brilliance. Ruby is so beautiful and some friends have treasured it as a collection, which can be watched from time to time. However, there is also a kind of jade similar to ruby ​​on the market. It is red fused alumina, then there will be friends who want to ask, what is the difference between the two? China Jewelry Merchants Network Xiaobian to solve for everyone?
The color of red fused alumina is purple-red and has a strong hardness. It is mainly suitable for making cutting tools. The main component of red fused alumina is α-alumina, commonly known as chrome corundum. The hardness of red corundum is higher than that of brown corundum; the toughness is higher than that of white corundum. Grinding tools made of raw materials are suitable for grinding high carbon steel, high speed steel and thin wall parts thereof. Abrasives can also be used for grinding, polishing materials, precision casting sand, spray materials, chemical catalyst carriers, special ceramics, advanced refractories. Wait. Red fused alumina is a natural unprocessed ruby. At present, the red fused alumina jewelry on the market is mostly artificial red fused alumina.
The color of red fused alumina is purple-red and has a strong hardness. It is mainly suitable for making cutting tools. The main component of red fused alumina is α-alumina, commonly known as chrome corundum. The hardness of red corundum is higher than that of brown corundum; the toughness is higher than that of white corundum. Grinding tools made of raw materials are suitable for grinding high carbon steel, high speed steel and thin wall parts thereof. Abrasives can also be used for grinding, polishing materials, precision casting sand, spray materials, chemical catalyst carriers, special ceramics, advanced refractories. Wait. Red fused alumina is a natural unprocessed ruby. At present, the red fused alumina jewelry on the market is mostly artificial red fused alumina.
Ruby is a red, dark purple, purplish red, orange-red corundum. Its main component is aluminum oxide. Ruby is very hard and its hardness is only under the diamond. Ruby has a chemical composition of aluminum oxide and contains a small amount of chromium, iron and titanium. Red to pink due to trace element chromium. The color distribution is often uneven, with ribbons or patches. The crystal form is often in the form of a barrel, a short column, a plate, etc.; it has a flat crystal growth pattern. The aggregates are mostly granular or dense blocks. Hardness is 9, second only to the residual stone; no cleavage, crack development; has brittleness. The density is 3.95-4.1 g/cm 3 and the specific gravity is 3.97-4.05. Transparent to translucent; glass luster. The refractive index is 1.76-1.77, and the birefringence is 0.008-0.010. The dichroism is obvious and is a heterogeneous body. Under long- and short-wave ultraviolet radiation, red and dark red fluorescence: those with high chromium content have strong fluorescence. The visible light absorption spectrum has obvious absorption lines at 694.2 nm and 682.8 nm in the red region: from 620 to 540 nm, there is a broad absorption band; at 468.5 nm, there is a weak absorption line.
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