Question: What Is The Hardest Gem In The World?

What is the hardest stone in the world?

A diamond ring.

Scientists have calculated that wurtzite boron nitride and lonsdaleite (hexagonal diamond) both have greater indentation strengths than diamond.

Source: English Wikipedia.

(PhysOrg.com) — Currently, diamond is regarded to be the hardest known material in the world..

What is the most rarest gem on earth?

List of the Most Rare Gemstones in The WorldBenitoite. … Grandidierite. … Red Beryl. … Jadeite. … Black Opal. … Taaffeite. … Alexandrite. … Painite. The Guinness Book of World Record called Painite the world’s rarest mineral.More items…•

Can I break a diamond with a hammer?

As an example, you can scratch steel with a diamond, but you can easily shatter a diamond with a hammer. The diamond is hard, the hammer is strong. … This makes the diamond incredibly hard and is why it is able to scratch any other material.

Is quartz harder than diamond?

Diamond is always at the top of the scale, being the hardest mineral. There are ten minerals in Mohs scale, talc, gypsum, calcite, fluorite, apatite, feldspar, quartz, topaz, corundum, and for last and hardest, diamond.

Will sandpaper scratch a diamond?

Diamonds are among the world’s hardest stones. Consequently, it wouldn’t be scratched by the rough surface of the sandpaper. The most common “fake” diamond is cubic zirconia. If you scratched it with a sandpaper it would scratch up just like any other material that is not a diamond.

What is the rarest birthstone?

Diamond (April) is the rarest birthstone in a total of six states, while topaz (November) is the rarest birthstone in Montana, Wyoming, and Rhode Island. Emerald (May), sapphire (September), and pearl (June) are the rarest birthstones in Texas, Washington, and Utah, respectively.

Is Ruby rarer than diamond?

Diamonds are one of the most valuable precious stones around, but not because diamonds are especially rare. In fact, high-quality emeralds, rubies, and sapphires are all rarer in nature than diamonds.

What are the hardest and second hardest gems?

Sapphire is also only used to describe the gem variety; otherwise it is simply called Corundum. Corundum is a very hard, tough, and stable mineral. For all practical purposes, it is the hardest mineral after Diamond, making it the second hardest mineral.

What is the weakest gem?

talcThe weakest MATERIAL is talc. This is drilled into every geology & geography student when learning Mohs Scale. A mineral has to be strong enough to be cut and polished to be a gemstone.

What stone is as strong as a diamond?

Corundum (9) is twice as hard as topaz (8), and diamond (10) is four times as hard as corundum….The Mohs Scale of Hardness.10Diamond9Corundum (rubies and sapphires)8Topaz7Quartz [Example: It scratches window glass]6Feldspar [Example: A steel file will scratch it]5 more rows

What is the rarest rock?

painiteIn 2005, The Guinness Book of World Records called painite the world’s rarest gemstone mineral. First discovered in Myanmar by British mineralogist Arthur C. D. Pain in the 1950s, for decades there were only two known crystals of the hexagonal mineral on Earth; by 2005, there were still fewer than 25 known specimens.