Old European Cut

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  • A 2.14-carat Robin's Egg Blue Montana Sapphire (heated) sits on a textured gray surface. The gemstone's intricate facets reflect light, showcasing its clarity and brilliance. Below the gem, the text reads "EARTH'S TREASURY" with a small emblem in between the words.

    0.82-Carat Sky Blue Montana Sapphire (Heated)

    $820.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    1.73-Carat Sky Blue Montana Sapphire (Heated)

    $3,300.00

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  • A 1.78-carat medium blue heated Montana Sapphire, round and faceted, rests on a textured gray surface with the "Earth's Treasury" logo and text at the bottom.

    1.78-Carat Medium Blue Montana Sapphire (Heated)

    $2,950.00

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  • A 1.97-carat deep blue Montana sapphire (heated) in a round brilliant cut is displayed on a textured gray surface, with the "Earth's Treasury" logo and text below.

    1.97-Carat Deep Blue Montana Sapphire (Heated)

    $3,800.00

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  • A 1.79-carat rich blue Montana Sapphire (heated) in round brilliant cut rests on a textured, light surface with the "Earth's Treasury" logo below.

    1.79-Carat Rich Blue Montana Sapphire (Heated)

    $3,100.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.79-Carat Medium Blue Montana Sapphire (Heated)

    $790.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.84-Carat Medium Blue Montana Sapphire (Heated)

    $760.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.93-Carat Rich Blue Montana Sapphire (Heated)

    $1,050.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.93-Carat Medium Blue Montana Sapphire (Heated)

    $1,050.00

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    Add to cartDone
  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.93-Carat Medium Blue Montana Sapphire (Heated)

    $930.00

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  • A blue-green Montana sapphire in an Old European-style cut (OEC)

    0.93-Carat Aqua Blue Montana Sapphire (Heated)

    $900.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.94-Carat Medium Blue Montana Sapphire (Heated)

    $940.00

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    Add to cartDone
  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.94-Carat Medium Blue Montana Sapphire (Heated)

    $1,200.00

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    Add to cartDone
  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.96-Carat Rich Blue Montana Sapphire (Heated)

    $1,200.00

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    Add to cartDone
  • A blue-green Montana sapphire in an Old European-style cut (OEC)

    0.96-Carat Peacock Blue Montana Sapphire (Heated)

    $1,250.00

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    Add to cartDone
  • A blue Montana sapphire in an Old European-style cut (OEC)

    1.04-Carat Rich Blue Montana Sapphire (Heated)

    $1,500.00

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    Add to cartDone

Natural Gemstone Jewelry & Loose Gemstones at Earth’s Treasury

At Earth’s Treasury, we make finding your color easy with one of the widest selections of ethically sourced gemstones available, from Montana sapphires and garnets to tourmaline and emeralds. Our team of talented designers and jewelers is dedicated to creating custom gemstone jewelry that’s as unique as your story. Whether you’re drawn to classic pieces or dream up a one-of-a-kind engagement ring, we’ll guide you every step of the way to ensure your jewelry feels personal, original, and entirely you.