Ruby rings are circular jewelry ornaments that adorn the finger and are mounted with the precious gemstone ruby, or multiple rubies.  Ruby rings can be made of either natural stones, simulated stones, or lab created stones.  Ruby rings are some of the most expensive pieces of jewelry in the world, but only if they are made natural ruby stones.  Simulated and lab created stones are not rare, and hence, the value of ruby rings that are simulated or lab created is minimal.

The metals most often used for natural ruby rings are gold and platinum.  18K gold and 14K gold are the most common ruby gold rings.  Platinum ruby rings are also very popular, as the metal platinum is ideal for very high quality jewelry.  Simulated and lab created ruby rings are often mounted on lesser quality metal and/or lower grade gold alloys.​

Rubies make up on of the five cardinal gems, along with diamonds, sapphires, emeralds, and amethyst.  Rubies are also the third hardest substance known to man, after only diamonds and moisannites, with a score of 9 on the Mohs scale.  Jewelers love to design beautiful jewelry with rubies partly because rubies are not easy to crack or break.

Some of the most expsenive gemstones in the world are rubies.  In 2015 the Sunrise Ruby sold in auction to an undisclosed buyer for approximately $30M.  It is not uncommon for large carat, high quality ruby rings to fetch over a $1M price tag.

Ruby rings are typically deep red or pink, due to the element chromium.  That being said, in the United States, if rubies are deemed to pink they are sometimes classified as "pink sapphires".  Rubies are also often combined with diamonds to make exotic ruby rings with multiple gemstones.

Ruby rings that are not natural, ie simulated or lab created, are significantly less expensive but have very little resale value.  The reason being is there is no rarity or scarcity value for lab created, or even natural stones that have been tampered with to alter the natural state.

Ruby rings are typically valued like diamond rings, based upon the 4 C's of cut, clarity, carats, and color.  The weight of the ruby in the ruby ring is measured in carats.  The clarity and color determine the quality, and the cut is the shape of the ruby ring.​​​

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