What Are Black Semi-Precious Stones Called? Unveiling Their Beauty

What is the name of a gemstone that is black in color? Black onyx is a widely recognized black gemstone, showcasing a smooth, waxy shine and distinctive parallel bands of color. To intensify its deep black hue, black onyx is often subjected to heat treatment, enhancing its overall polished and refined look. This gemstone occurs naturally in several locations around the world, including India, Madagascar, Brazil, and Russia. It is classified under the chalcedony family, akin to jasper. The details were last updated on November 7, 2022.

The identity of the enigmatic Black Stone has long been a subject of fervent discussion and speculation among researchers and scholars. This intriguing object, known for its deep black color and historical significance, has prompted a wide range of theories about its composition. Some experts have proposed that it could be composed of basalt, a type of volcanic rock, while others have suggested it might be an agate, a finely-grained variety of quartz. Additionally, some have even proposed that the Black Stone could be a fragment of natural glass or, perhaps the most widely embraced theory, a stony meteorite that originated from space. These diverse viewpoints contribute to the ongoing quest to unlock the true nature of this remarkable artifact, adding to its mystique and allure.

Is black spinel an expensive gemstone? The cost of black spinel can vary significantly depending on its quality and size. Generally, top-quality black spinel, which typically ranges from 1 to 2 carats, can be found in the price range of $1,200 per carat. However, when it comes to larger black spinel gems, those exceeding 5 carats are considered exceptionally rare and can command a much higher price. In fact, black spinel gems of this size may cost anywhere from $7,000 to $10,000 per carat, making them a highly sought-after and premium gemstone in the market. It’s important to note that various factors such as color, clarity, and cut can also influence the price of black spinel, making it a gemstone with a wide price range to cater to different preferences and budgets.