Just like rubies, sapphires are chemically crystallized alumnia (Al2O3), which gives them their magnificent properties such as a high degree of hardness (H = 9), high density (D = 3.99), and high on the refractive index (n = 1.76 – 1.78). The slight traces of iron-titanium oxide found in the environment surrounding sapphire formation gives them their majestic blue color. Etymological roots in Sanskrit, Greek, Latin, and Arabic demonstrate the abundance of sapphires, which is to the fact that the coloring agents (impurities) are more common than those of rubies.
While sapphires are known for their blue color, they also come in shades of pink, purple, yellow, and orange. In an age of technology when gemstones can be artificially produced it is becoming increasingly important to have a certificate of origin for sapphires.
One really cool sapphire is called Padparadscha, which is Sinhalese for a type of lotus flower. Padparadscha has the quality of showing pink and orange simultaneously. They are only found in Sri Lanka, Myanmar and they are rare and extremely expensive. Buyers beware, however, orange sapphires are often offered in place of real Padparadscha and sometimes pink sapphire can be treated with beryllium to create the same effect. In very rare cases, some sapphires have the ability to change color depending on the light source. For instance, they might show blue-violet in daylight and red or reddish-violet in artificial light. Clearly, sapphires are amazing gems and their beauty commands our thoughtful respect.
If you would like to learn more about the splendor of sapphires, continue your search here.....
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