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මැණික් හදුනා ගැනීම හා දැනුම බෙදා ගැනීමට join වෙන්න අපේ whatsapp group එකට https://chat.whatsapp.com/FpsI63Sjeus... Chromium plays a significant role in gemology as a "chromophore," a trace element that is responsible for giving many popular and valuable gemstones their color. The presence of chromium ions in a gem's crystal structure causes it to absorb certain wavelengths of light and transmit or reflect others, resulting in the color we see. How Chromium Creates Color The specific color that chromium produces depends on the host mineral's crystal structure. The same chromium ion can create different colors in different gems because the arrangement of atoms around the chromium ion changes how it interacts with light. Red: When chromium ions substitute for aluminum ions in the mineral corundum (Al 2 O 3 ), they absorb yellow and green light, allowing red light to pass through. This is what creates the vibrant red color of a ruby. Green: In the beryl mineral family, chromium's presence results in the absorption of red and violet-blue light, leaving the transmitted light to appear as a lush green. This is the source of the classic "emerald green" color of emeralds. Notable Gems Colored by Chromium Beyond rubies and emeralds, chromium is the coloring agent for several other gemstones: Alexandrite: This rare variety of chrysoberyl is famous for its color-change effect. In daylight, it appears green, but under incandescent light, it shifts to a purplish-red. This unique phenomenon is caused by the presence of chromium, which interacts differently with light depending on the spectrum of the light source. Chrome Diopside: This gem is known for its intense, vivid green color, which is a direct result of its chromium content. Chrome Tourmaline: A distinct variety of tourmaline, it is colored by chromium and/or vanadium, giving it a rich green hue. Jadeite: While often colored by iron, high-quality, vibrant green jadeite gets its color from chromium. Red Spinel: Although spinel can come in various colors, the beautiful red varieties are often colored by chromium, sometimes making them a more affordable alternative to ruby. Uvarovite Garnet: This is a rare, vibrant green garnet species whose color is exclusively due to chromium.sses.