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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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    Add to cartDone
  • 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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    Add to cartDone
  • 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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    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
  • A white Montana sapphire in a classic diamond round brilliant design

    0.82-Carat Near Colorless Montana Sapphire

    $675.00

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    Add to cartDone
  • A blue Montana sapphire in a classic diamond round brilliant design

    0.82-Carat Grayish Blue Montana Sapphire

    $675.00

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    Add to cartDone
  • A blue Montana sapphire in a classic diamond round brilliant design

    0.87-Carat Aqua Blue Montana Sapphire

    $850.00

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    Add to cartDone
  • A 1.54-Carat Midnight Blue-Green Montana Sapphire (Heated) with a geometric cut rests on a textured gray surface, with "Earth's Treasury" below the gem.

    1.54-Carat Midnight Blue-Green Montana Sapphire (Heated)

    $2,300.00

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    Add to cartDone
  • 2.39-Carat Dark Blue Montana Sapphire (Heated)

    2.39-Carat Dark Blue Montana Sapphire (Heated)

    $5,400.00

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    Add to cartDone
  • A particolored Montana sapphire in our "Helena" oval design

    1.15-Carat Rich Blue-Yellow Particolored Montana Sapphire (Heated)

    $1,700.00

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    Add to cartDone
  • A 1.58-carat oval-cut Peacock Blue Montana Sapphire (heated) with multiple facets is displayed on a textured gray surface, featuring the text "EARTH'S TREASURY" at the bottom.

    1.58-Carat Peacock Blue Montana Sapphire (Heated)

    $2,700.00

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    Add to cartDone
  • A 1.14-carat deep peacock blue Montana sapphire (heated), round brilliant-cut, is displayed on a textured gray surface with "EARTH'S TREASURY" at the bottom.

    1.14-Carat Deep Peacock Blue Montana Sapphire (Heated)

    $1,995.00

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    Add to cartDone
  • 1.70-Carat Deep Peacock Blue Montana Sapphire (Heated)

    1.70-Carat Deep Peacock Blue Montana Sapphire (Heated)

    $3,300.00

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    Add to cartDone
  • A blue Montana sapphire in a classic diamond round brilliant design

    0.96-Carat Medium Blue Montana Sapphire (Heated)

    $1,100.00

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    Add to cartDone
  • A blue Montana sapphire in a classic diamond round brilliant design

    1.06-Carat Rich Violet Blue Montana Sapphire (Heated)

    $1,600.00

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    Add to cartDone
  • A particolored Montana sapphire in a classic diamond round brilliant design

    1.15-Carat Yellow-Colorless Particolored Montana Sapphire (Heated)

    $1,400.00

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    Add to cartDone
  • 1.29-Carat Deep Peacock Blue Montana Sapphire (Heated)

    1.29-Carat Deep Peacock Blue Montana Sapphire (Heated)

    $2,600.00

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    Add to cartDone
  • A 1.29-carat Rich Teal Montana Sapphire (Heated) gemstone, round-cut, is shown on a textured gray surface with "EARTH'S TREASURY" displayed beneath it.

    1.29-Carat Rich Teal Montana Sapphire (Heated)

    $2,300.00

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    Add to cartDone
  • A blue Montana sapphire in our "Stella" square cushion design

    0.96-Carat Medium Blue Montana Sapphire (Heated)

    $1,400.00

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    Add to cartDone
  • A 1.43-carat sky blue Montana sapphire (heated), cushion-cut, is showcased on a textured gray surface with "Earth's Treasury" displayed below.

    1.43-Carat Sky Blue Montana Sapphire (Heated)

    $2,800.00

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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.