Spinel is a member of the Caibao family. There are many kinds of spinel. Because of the different elements, the spinel will display a variety of colors. Here are some of the factors that affect the price of spinel and the types of spinel. Factors affecting the price of spinel Color: The color of the spinel is topped with deep red, magenta and orange. The value of spinel in other colors is lower. The exception is the spinel with a color changing effect. ç‘•ç–µ: Spinels are generally cleaner and less sputum. If cockroaches, cracks or cracks are visible to the naked eye, their value will be much lower. If there is an inclusion in the spinel. As long as it does not damage the overall color of the spinel, it does not have much influence on the quality of the evaluation. Cut: Because the spinel color distribution is relatively uniform, and there is no pleochroism, it is generally not necessary to consider its directionality. However, spinel generally has a small crystal and often develops spinel twin and octahedral cleavage, so the specifications of the gemstone after cutting are not ideal. In the evaluation, attention should be paid to the brightness and leakage of the gemstone. The less the light leakage, the better the brightness. The brighter the better. Weight: high quality spinel, less than 10 carats or more. Therefore, the loss should be reduced as much as possible in the cutting to maintain the weight of the original stone. Introduction to the type of spinel Red spinel: also known as "Balas ruby", refers to red, pink, rose red transparent spinel, easily mistaken for ruby. Orange-red spinel: a spinel with a yellow hue in red. Blue-violet spinel: refers to a transparent spinel with alternating red, purple, and blue colors and a total of blue-violet. Blue spinel: refers to the blue transparent spinel, often in the form of grayish blue to purple blue or greenish blue. Color-changing spinel: It is a rare and precious variety. In the sun, it is brightly grayish blue, and under artificial light, it appears purple. Colorless spinel: is a relatively pure magnesium spinel, rare. Starlight spinel: The spinel contains acicular rutile inclusions. After processing and honing, a "star effect" can occur. The base color is generally gray, grayish blue or black opaque. For the more rare species.
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