Radiant Rectangle

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  • The “Briar” in Platinum with 2.05-Carat Montana SapphireThe “Briar” in Platinum with 2.05-Carat Montana Sapphire

    The “Briar” Diamond-Accented Solitaire

    $2,450.00

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  • The "Deliah" ring in 14k yellow gold with 1.82-carat Montana sapphireThe "Deliah" ring in 14k yellow gold with 1.82-carat Montana sapphire

    The “Deliah” Ring

    $2,900.00

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  • An aqua Montana sapphire in our "Fourth of July" rectangle design

    1.07-Carat Blue-Aqua Bicolored Montana Sapphire (Heated)

    $1,350.00

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  • The “Magnolia” Ring in platinum with 1.59-Carat Montana SapphireThe “Magnolia” Ring in platinum with 1.59-Carat Montana Sapphire

    The “Magnolia” Ring

    $2,300.00

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  • Stacked from 39 images. Method=B (R=8, S=4) gold Gaia ring with large oval blue gemstone and two textured gold bands, displayed on a green leaf. 'Earth's Treasury' logo and text below.The "Gaia" ring in 14k yellow gold, featuring a 4.63-carat Montana Sapphire, stands upright on rough gray stone, with the Earth's Treasury logo at the bottom of the image.

    The “Gaia” Double Pave Ring

    $3,500.00

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  • The "Guanyin" ring in 18K yellow gold, featuring a 1.94-carat Malaia garnet, is displayed on dark stone with a geometric patterned background.The "Guanyin" ring in 18K yellow gold, featuring a 1.94-carat Malaia garnet, is displayed on dark stone with a geometric patterned background.

    The “Guanyin” Ring

    $2,250.00

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  • A blue-green Montana sapphire in our "Fourth of July" rectangle design

    1.08-Carat Blue-Teal Bicolored Montana Sapphire (Heated)

    $1,200.00

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  • A particolored Montana sapphire in our "Fourth of July" rectangle design

    1.07-Carat Blue-Aqua Bicolored Montana Sapphire (Heated)

    $1,200.00

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  • A particolored Montana sapphire in our "Fourth of July" rectangle design

    1.03-Carat Blue-Aqua Bicolored Montana Sapphire (Heated)

    $1,300.00

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  • A blue-green Montana sapphire in our "Fourth of July" rectangle design

    1.30-Carat Teal Blue Montana Sapphire (Heated)

    $1,500.00

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  • A blue Montana sapphire in our "Fourth of July" rectangle design

    1.05-Carat Aqua Blue Montana Sapphire (Heated)

    $1,100.00

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  • A blue Montana sapphire in our "Fourth of July" rectangle design

    0.93-Carat Medium Blue Montana Sapphire (Heated)

    $900.00

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  • A blue Montana sapphire in our "Fourth of July" rectangle design

    1.24-Carat Medium Blue Montana Sapphire (Heated)

    $1,200.00

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  • 4.38-Carat Deep Raspberry Red California Tourmaline

    4.38-Carat Deep Raspberry Red California Tourmaline

    $1,750.00

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  • A blue-green Australian Sapphire in our "Fourth of July" rectangle design

    0.86-Carat Teal Blue Australian Sapphire (Heated)

    $850.00

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  • The “Elenin” Ring with 1.47-Carat Montana Sapphire (Heated)The “Elenin” Ring with 1.47-Carat Montana Sapphire (Heated)

    The “Elenin” Solitaire

    $1,700.00

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  • 0.87-Carat Yellow Montana Sapphire (Heated)

    0.87-Carat Yellow Montana Sapphire (Heated)

    $700.00

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  • 1.08-Carat Rich Blue Montana Sapphire (Heated)

    1.08-Carat Rich Blue Montana Sapphire (Heated)

    $1,100.00

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  • 1.17-Carat Teal Blue Montana Sapphire (Heated)

    1.17-Carat Teal Blue Montana Sapphire (Heated)

    $1,500.00

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  • 0.87-Carat Medium Blue Montana Sapphire (Heated)

    0.87-Carat Medium Blue Montana Sapphire (Heated)

    $875.00

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  • 0.79-Carat Aqua Blue Montana Sapphire (Heated)

    0.79-Carat Aqua Blue Montana Sapphire (Heated)

    $800.00

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  • 1.29-Carat Teal Blue Montana Sapphire (Heated)

    1.29-Carat Teal Blue Montana Sapphire (Heated)

    $1,400.00

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  • A 14K yellow gold "Arwyn" ring with a 0.95-carat Montana sapphire center, accented by clustered white diamonds, is displayed on a green leaf. "EARTH'S TREASURY" appears at the bottom.The Estes, Kayley and Nore, Caroline 1 ring features an intricate gold trellis cluster design around a dark gemstone, displayed upright on a textured gray surface with "EARTH'S TREASURY" at the bottom.

    The “Arwyn” Trellis Cluster Ring

    $2,200.00

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  • The "Estelle" ring in 14k white gold with 1.11-Carat Umba sapphireThe "Estelle" ring in 14k white gold with 1.11-Carat Umba sapphire

    The “Estelle” Cluster Ring

    $2,600.00

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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.