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      • Rare and exotic gemstones are those that are less commonly found and often possess unique qualities that set them apart from more traditional stones like diamonds, rubies, and sapphires. The allure of these stones lies in their unusual colors, striking patterns, or the peculiar conditions under which they form.
      geologyscience.com/gemstone-blog/rare-and-exotic-gemstones-discoveries-and-characteristics/
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  2. Rarity is one of the most prized qualities of gemstones. However, it isn''t clear to people just how rare a given gem is. All of them are rare, but some are much more so than others.

  3. Apr 18, 2019 · Gem-A tutor manager, Rona Bierrum FGA DGA, explores some of the rarest gemstones known to man and considers how rarity is measured in the gem and jewellery trade. The term ‘rarity’ stems from the Latin rarus meaning ‘far apart’ or ‘infrequently found’.

    • The Abundance of Elements in The Earth's Crust
    • A World of Oxygen and Silicon
    • From Emery Boards to Uncommon Gemstones

    The following figures are estimated percentages of the Earth's crust by weight. The eight most common elements in the crust are: 1. Oxygen (O) 46.4% 2. Silicon (Si) 28.15% 3. Aluminum (Al) 8.23% 4. Iron (Fe) 5.63% 5. Calcium (Ca) 4.15% 6. Sodium (Na) 2.36% 7. Magnesium (Mg) 2.33% 8. Potassium (K) 2.09% All other elements represent a mere 0.66% of t...

    Oxygen and silicon make up more than 74% of the Earth's crust. It's not surprising that quartz (SiO2) is one of the most common gemstone minerals. However, oxygen and silicon are also found in some uncommon gemstones. Spodumene is a gemstone mineral composed of oxygen, silicon, aluminum, and lithium (LiAlSi2O6). Lithium makes up just two thousandth...

    Corundum (Al2O3) is a common mineral composed of aluminum and oxygen. You'll frequently find it on sandpaper and nail files as emery. Gem-grade corundum, however, is considerably more rare, even rarer than diamonds. Corundum gems that include a rare trace of chromium are red in color. This red variety of corundum is more commonly known as ruby. Chr...

    • Tanzanite. Said to be about 1,000 times rarer than diamonds, tanzanite is a deep-blue gemstone named after Tanzania, where it was discovered for the first time in 1967.
    • Royal demantoid. Royal dementiods resemble emeralds but are actually part of the garnet family. They range in color from a deep green to yellow, and the yellow in the stones is caused by ferric iron.
    • Blue garnet. Blue garnet personally reminds me of the sapphire, but it has a slight greenish tint under sunlight. Although there are tales of blue garnet selling for as much as $1.5 million, I was personally unable to confirm this.
    • Jeremejevite. Jeremejevite can be sky blue, pale yellow or completely colorless. This gemstone was first discovered in Siberia, but Namibia is home to the highest-quality stones.
  4. Jul 24, 2024 · Why It’s So Rare: The rarity of painite is due to its very specific and limited geological formation conditions. Until the early 2000s, only a few specimens were known to exist, making it extremely rare.

  5. Diamonds are popular gemstones surrounded by popular misconceptions. We'll tell you how they became so prized and debunk some of those diamond myths, too.

  6. Feb 8, 2024 · Delve into the fascinating world of rare gemstones, from the vibrant Paraiba tourmaline to the elusive painite, and understand what makes them so precious.

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