1.80

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  • A 1.80-carat heated Montana sapphire with a round brilliant cut is displayed on a textured gray surface, featuring the text "EARTH'S TREASURY" at the bottom.

    1.80-Carat Light Aqua-Teal Particolored Montana Sapphire (Heated)

    $4,000.00

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  • A 1.80-carat Montana Sapphire with an oval brilliant cut is showcased on a textured gray surface, featuring the text "Earth's Treasury" at the bottom.

    1.80-Carat Near Colorless Montana Sapphire

    $3,950.00

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  • A 1.80-carat Tanga Garnet, cut in a faceted rectangular shape, is displayed on a textured gray surface with the "Earth's Treasury" logo at the bottom.

    1.80-Carat Bubblegum Pink Garnet

    $900.00

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  • A 1.80-carat heated Montana sapphire, round brilliant-cut and blue, is displayed on a light textured surface with "Earth's Treasury" below.

    1.80-Carat Teal Montana Sapphire (Heated)

    $3,800.00

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  • A 1.80-carat heated Montana sapphire with visible dark inclusions rests on a textured gray surface. "EARTH'S TREASURY" is labeled at the bottom.

    1.80-Carat Teal Blue Montana Sapphire (Heated)

    $3,800.00

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  • A 1.80-carat, round-cut, faceted blue Montana Sapphire (heated) rests on a textured surface with "Earth's Treasury" displayed at the bottom.

    1.80-Carat Peacock Blue Montana Sapphire (Heated)

    $4,500.00

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  • A 1.80-carat blue-aqua particolored Montana Sapphire (heated), round and faceted, displayed on a textured surface with "EARTH'S TREASURY" below.

    1.80-Carat Blue-Aqua Particolored Montana Sapphire (Heated)

    $4,500.00

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  • A faceted greenish-yellow Australian sapphire lies on a textured, silver-gray surface. The 1.80-carat gem has a complex, symmetrical cut, displaying multiple reflective facets. The text "EARTH'S TREASURY" appears at the bottom, next to a small hexagonal logo.

    1.80-Carat Greenish Yellow Australian Sapphire (Heated)

    $2,200.00

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  • 1.80-Carat Pale Green-Orange Bicolored Montana Sapphire (Heated)

    1.80-Carat Pale Green-Orange Bicolored Montana Sapphire (Heated)

    $3,200.00

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  • A 1.80-carat dark blue heated Montana sapphire in a hexagon shape with intricate facets, shown on textured gray next to the "Earth's Treasury" logo.

    1.80-Carat Dark Blue Montana Sapphire (Heated)

    $3,800.00

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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.