Radiant Rectangle

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  • A rectangular, blue-green 1.29-carat heated Montana sapphire is displayed on a textured surface with the "Earth's Treasury" logo at the bottom.

    1.29-Carat Rich Teal Montana Sapphire (Heated)

    $1,850.00

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  • 1.33-Carat Montana Sapphire (Heated), a rectangular blue-green gemstone with geometric facets, displayed on a textured silvery surface. "Earth's Treasury" text and logo are visible at the bottom.

    1.33-Carat Deep Peacock Blue Montana Sapphire (Heated)

    $2,650.00

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  • 1.52-Carat Montana Sapphire (Heated), a rectangular, faceted blue-green gemstone, displayed on a textured light gray surface with the "Earth's Treasury" logo below.

    1.52-Carat Rich Teal Montana Sapphire (Heated)

    $2,300.00

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  • A rectangular, deep blue faceted 2.21-carat sapphire is displayed on a textured surface with the "Earth's Treasury" logo beneath it.

    2.21-Carat Royal Blue Ceylon Sapphire (Heated)

    $5,700.00

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  • A rectangular 1.57-carat heated Montana Sapphire with step-cut facets is displayed on a textured gray surface, featuring the "Earth's Treasury" logo at the bottom.

    1.57-Carat Cornflower Blue Montana Sapphire (Heated)

    $2,950.00

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  • A radiant-cut, rectangular 1.04-carat heated Montana sapphire in deep blue rests on a textured pale gray surface. "EARTH'S TREASURY" is visible at the bottom.

    1.04-Carat Peacock Blue Montana Sapphire (Heated)

    $1,550.00

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  • A 1.15-carat, rectangular, faceted Montana sapphire (heated) in blue-green rests on a textured gray surface with "Earth's Treasury" at the bottom.

    1.15-Carat Teal-Blue Particolored Montana Sapphire (Heated)

    $2,000.00

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  • A 1.33-carat heated Montana sapphire, cut in a rectangular facet and showcasing a blue-green hue, is displayed on a textured gray surface with the Earth’s Treasury logo at the bottom.

    1.33-Carat Teal-Blue Particolored Montana Sapphire (Heated)

    $2,650.00

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  • A 1.45-carat heated Montana sapphire, rectangular and blue with intricate facets, is displayed on a textured metallic surface. The text "EARTH'S TREASURY" appears at the bottom.

    1.45-Carat Medium Blue Montana Sapphire (Heated)

    $2,900.00

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  • A 0.89-carat heated Montana sapphire with a rectangular cut and starburst pattern is shown on a textured gray surface. "EARTH'S TREASURY" is displayed at the bottom of the image.

    0.89-Carat Peacock Blue Montana Sapphire (Heated)

    $950.00

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  • A rectangular, faceted 1.10-carat heated Montana sapphire gemstone rests on a textured gray surface, with the "EARTH'S TREASURY" logo and text at the bottom.

    1.10-Carat Aqua Blue Montana Sapphire (Heated)

    $1,150.00

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  • A rectangular, multi-faceted blue 0.72-carat heated Montana sapphire rests on a textured, light surface. "Earth's Treasury" appears at the bottom of the image.

    0.72-Carat Medium Blue Montana Sapphire (Heated)

    $750.00

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  • A rectangular, blue faceted 0.93-carat Montana Sapphire (Heated) is displayed on a textured gray surface with the "Earth's Treasury" logo below.

    0.93-Carat Medium Blue Montana Sapphire (Heated)

    $1,150.00

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  • A 1.02-carat heated Montana sapphire, rectangular and faceted with a blue hue, rests on a textured surface. "EARTH'S TREASURY" appears at the bottom of the image.

    1.02-Carat Medium Blue Montana Sapphire (Heated)

    $1,500.00

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  • A 1.07-carat heated Montana sapphire with intricate facets rests on a textured gray surface, accompanied by the words "EARTH'S TREASURY" below it.

    1.07-Carat Medium Blue Montana Sapphire (Heated)

    $1,600.00

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  • A 1.10-carat Montana sapphire (heated) with faceted edges is displayed on a textured light gray surface, featuring the text "EARTH'S TREASURY" at the bottom.

    1.10-Carat Medium Blue Montana Sapphire (Heated)

    $1,950.00

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  • The “Ailette” ring in 14K yellow gold features a 1.44-carat round Montana sapphire center, surrounded by small white diamonds, displayed on a green leaf background.The "Ailette" ring in 14K yellow gold with a 1.44-carat Montana sapphire stands upright on a textured gray surface, its intricate design framing the rough blue stone above the Earth's Treasury logo.

    The “Ailette” Halo Ring

    $2,450.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • A 1.63-carat heated Ceylon sapphire, rectangular and deep blue with beveled edges, rests on a textured gray surface. "EARTH'S TREASURY" is displayed at the bottom of the image.

    1.63-Carat Rich Blue Ceylon Sapphire (Heated)

    $3,700.00

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  • A rectangular, faceted blue 1.35-carat Ceylon sapphire (heated) rests on a textured metallic surface with "EARTH'S TREASURY" at the bottom.

    1.35-Carat Rich Blue Ceylon Sapphire (Heated)

    $2,700.00

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  • A 2.25-carat heated Ceylon sapphire with an emerald cut is displayed on a light patterned surface, with "Earth's Treasury" shown below.

    2.25-Carat Cornflower Blue Ceylon Sapphire (Heated)

    $5,400.00

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  • 0.90-Carat Purplish Pink Montana Sapphire

    0.90-Carat Purplish Pink Montana Sapphire

    $1,300.00

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  • The "Kyria" ring is crafted in 14k yellow gold, featuring a 1.41-carat Montana sapphire and small round diamonds on each side, displayed against a green striped background.The "Kyria" ring in 14k yellow gold with a 1.41-carat Montana sapphire stands upright on a rough blue stone atop a textured gray surface, with "EARTH'S TREASURY" shown at the bottom.

    The “Kyria” Ring

    $1,800.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • A 1.18-carat Australian sapphire with a rectangular faceted cut is displayed on a textured surface.

    1.18-Carat Golden Yellow Australian Sapphire (Heated)

    $1,550.00

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  • A faceted rectangular Australian Sapphire (1.62-Carat, Heated) in green rests on a textured gray surface, with the "Earth's Treasury" logo and text below.

    1.62-Carat Olive Green Australian Sapphire (Heated)

    $2,700.00

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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.