Gemstone Hardness Chart. Hardness is defined as resistance to scratching and is graded between 1 (softest) and 10 (hardest) using the Mohs scale of mineral hardness. Diamond has

Here's a list of the most popular purple gemstones you might find used in jewelry: 1. Amethyst. Amethyst gemstones are some of the most popular purple gemstones used in jewelry. It's also the birthstone for the month of February. In ancient times, the stone was regarded as precious as diamonds, rubies, and emeralds.

While diamond is the hardest gemstone, its all-round durability is considered less than that of relatively softer gemstones, such as sapphires and rubies, which can garner higher prices due to their toughness.

Even though ruby and sapphire (corundum) rate a 9, a diamond is many times harder. Chrysoberyl is the next hardest gem (Mohs hardness of 8.5) followed by topaz and spinel, which have a Mohs hardness of 8. Many gems including diamond even have a directional hardness where one direction or surface is harder than another.

Natural gemstones are stones that are caused by nature without a. Sapphires (along with rubies) are one of the toughest gemstones, second in hardness 

The hardest rock to find is Painite. A British mineralogist first found this rare gem mineral in Myanmar but at first, they thought it was a Ruby. It wasn’t until the 1950s until Painite was found to be a new gemstone. Since it is so rare, it can cost up to $60,000 per carat.

Diamonds are the hardest gemstones in the world, but did you know sapphires are the hardest natural color gemstones in the world?

The diamond is known to be the hardest gemstone, while talc is a soft mineral. The Mohs Hardness Scale is used to determine the hardness of 

9/28 · Here are a few of the rarest from around the world. 1. TANZANITE // FOUND ONLY IN TANZANIA. GeologMax via Wikimedia // CC BY-SA 4.0. Tanzanite is a beautiful blue variety of the mineral zoisite

Hardness: Hardness: Hardness: Hardness: Hardness: Hardness: Hardness: Hardness: Hardness: 1: 2: 3: 4: 5: 6: 7: 8: 9: Acroite: Colorless Tourmaline: 7 - 7.5: Actinolite: 5: Adamite: 6: Adularia: 6: Aerinite: 3: Afghanite: 4.5 - 6: Agate: 6.5 - 7: Agrellite: 5,5: Ajoite,Shattuckite & Paragonite: 2.5 - 3.50: Alabandite: 3.5 - 4: Alexandrite: 8,5: Almandine Garnet: 7,5: Almandine Garnet in Beryl: Goshenite: 7.5

Running from 1 to 10 this puts Diamonds at 10 as the hardest Gemstones with the other regal trio of Emerald, Ruby and Sapphire coming in at 7 to 9.