Description
15cts Ruby is a very rare and valuable gemstone that has a rich and vibrant red color. It is a variety of the mineral corundum, which is composed of aluminum oxide. It is one of the most brilliant and durable gemstones, with a hardness of 9 on the Mohs scale. 15cts Ruby has a high refractive index and strong dispersion, which give it a remarkable sparkle and fire. It is also known for its fluorescence, which makes it appear to glow from within.
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