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  • A blue-green Montana sapphire in a classic diamond round brilliant design

    1.12-Carat Teal Blue Montana Sapphire (Heated)

    $1,400.00

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  • A blue-green Montana sapphire in a classic diamond round brilliant design

    1.32-Carat Teal Montana Sapphire (Heated)

    $1,650.00

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

    1.37-Carat Teal Blue Montana Sapphire (Heated)

    $1,100.00

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

    1.06-Carat Aqua Blue Montana Sapphire (Heated)

    $1,400.00

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  • 1.90-Carat Peacock Blue Montana Sapphire (Heated)

    1.90-Carat Peacock Blue Montana Sapphire (Heated)

    $1,200.00

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  • A 2.28-carat deep blue-green Montana sapphire (heated), cushion-cut, displayed on a textured gray surface with "EARTH'S TREASURY" text at the bottom.

    2.28-Carat Deep Blue-Green Montana Sapphire (Heated)

    $3,400.00

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

    1.04-Carat Rich 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

    1.10-Carat Medium Blue Montana Sapphire (Heated)

    $1,100.00

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    Add to cartDone
  • 3.39-Carat Bright Pink California Tourmaline

    3.39-Carat Bright Pink California Tourmaline

    $500.00

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  • 3.21-Carat Bright Pink California Tourmaline

    3.21-Carat Bright Pink California Tourmaline

    $325.00

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  • 3.18-Carat Bright Pink California Tourmaline

    3.18-Carat Bright Pink California Tourmaline

    $475.00

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  • 3.54-Carat Forest Green California Tourmaline

    3.54-Carat Forest Green California Tourmaline

    $700.00

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  • 2.99-Carat Dark Lime Green California Tourmaline

    2.99-Carat Dark Lime Green California Tourmaline

    $450.00

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  • 1.42-Carat Pale Yellow-Green Montana Sapphire

    1.42-Carat Pale Yellow-Green Montana Sapphire

    $1,300.00

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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.