There are many precious gemstones that are studded into the crown with precious metals. One of the most precious gemstones to be a part of a crown is Koh-I-Noor.  This 106-carat diamond once belonged to India, but it is now part of the British Royals Crown jewels. Another precious gemstone is the emerald. Emerald is one of the hardest gemstones ranking 7.5-8 on the Mohs scale of hardness. (1 being the softest and 10 being the hardest). The emerald gives it a more elegant look.  Among many other crowns, the royal family also has a collection of emerald crowns and can be seen, in pictures, wearing them on various occasions. Emerald crown looks great is surely an eye turner because of its shiny green color-studded in the gold or silver crown. Aside from diamond and emerald, ruby is another precious stone used in the crown jewel. Ruby is a shiny red gemstone, which has a ranking of 9 on the Mohs scale of hardness. Ruby gemstone is associated with or is the birthstone of the zodiac sign is Cancer. This gemstone is believed to increase the healing powers, loving nature, health, knowledge, and wealth of the person who wears it. Ruby can be used in various jewelry pieces such as bracelets, necklaces, rings, etc. Not only it can be used as a separate, alone, jewelry piece but it can be used to enhance and give other gemstones a more complimentary and sophisticated look such as diamonds. Another gemstone that gives the jewelry an elegant and classy look is pearl. Pearl is not the hardest, ranking 2.5-4.5, but it comes in various colors such as black, white, pink, yellow, etc. the most known pearl is white, and it is widely used in many jewelry pieces.

The Crown is the symbol of power and high position, that is the reason why many brands across the world have used the crown in their logos. It shows people that the product or service which they are providing is high class, classy and luxurious. The most well-known brand is Rolex watches; its logo is a golden crown. Corona beer also had crowned as their logo. Ritz-Carlton hotels have crowned in their logo as well.