Radiant Rectangle

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  • A 1.59-carat heated Montana sapphire with a rectangular step cut and blue-green hue rests on a textured gray surface, with "EARTH'S TREASURY" below it.

    1.59-Carat Steely Blue-Green Montana Sapphire (Heated)

    $1,900.00

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  • A rectangular, faceted 0.83-carat heated Montana sapphire with a blue-green hue is displayed on a textured light gray surface above the text "EARTH'S TREASURY.

    0.83-Carat Light Aqua Blue Montana Sapphire (Heated)

    $800.00

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  • A 1.08-carat heated Montana sapphire with faceted edges is displayed on a textured gray surface, with "EARTH'S TREASURY" below.

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

    $1,900.00

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  • A 1.10-carat heated Montana sapphire with a blue, rectangular step-cut is displayed on a light textured surface. The text “EARTH'S TREASURY” appears at the bottom.

    1.10-Carat Peacock Blue Montana Sapphire (Heated)

    $2,100.00

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  • A 1.11-carat rectangular blue Montana sapphire (heated) with angular facets rests on a light textured surface. "EARTH'S TREASURY" appears at the bottom.

    1.11-Carat Medium Blue Montana Sapphire (Heated)

    $1,650.00

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  • A 1.26-carat heated Montana sapphire with a rectangular blue-green facet is displayed on a light textured surface, with "EARTH'S TREASURY" written below.

    1.26-Carat Aqua Montana Sapphire (Heated)

    $1,300.00

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  • A 1.27-carat radiant-cut blue Montana sapphire (heated) with geometric facets is displayed on a textured gray surface, with the "EARTH'S TREASURY" text and logo below.

    1.27-Carat Medium Blue Montana Sapphire (Heated)

    $1,900.00

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  • A rectangular, faceted 1.60-carat heated Montana sapphire with a blue hue is shown on a textured grey surface, the "Earth's Treasury" logo displayed below.

    1.60-Carat Peacock Blue Montana Sapphire (Heated)

    $3,250.00

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  • 1.60-Carat Aqua-Blue Particolored Montana Sapphire (Heated)

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

    $3,050.00

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  • A 1.10-carat heated Montana sapphire with a geometric rectangular cut rests on a textured gray surface. The Earth's Treasury logo is at the bottom of the image.

    1.10-Carat Medium Blue Montana Sapphire (Heated)

    $1,950.00

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  • A 1.29-carat heated Montana sapphire, rectangular and faceted in blue-green hues, showcased on a light textured surface with "EARTH'S TREASURY" beneath.

    1.29-Carat Teal-Yellow Particolored Montana Sapphire (Heated)

    $2,300.00

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  • A 1.73-carat rectangular, faceted Montana Sapphire (heated) with a light blue hue is shown on a textured pale surface, with "Earth's Treasury" displayed below.

    1.73-Carat Aqua Blue Montana Sapphire (Heated)

    $2,350.00

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  • A 1.82-carat heated Montana sapphire, cut in a blue emerald shape with geometric facets, rests on a textured, light surface. "EARTH'S TREASURY" appears at the bottom.

    1.82-Carat Peacock Blue Montana Sapphire (Heated)

    $3,300.00

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  • A 2.54-carat heated Montana sapphire with a radiant cut is displayed on a textured light gray surface. The "EARTH'S TREASURY" logo appears at the bottom of the image.

    2.54-Carat Sky Blue Montana Sapphire (Heated)

    $4,600.00

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  • A rectangular step-cut 2.70-carat heated Montana sapphire in blue-green is displayed on a light textured surface, with "EARTH'S TREASURY" at the bottom.

    2.70-Carat Teal Montana Sapphire (Heated)

    $6,500.00

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  • A rectangular, faceted 3.02-carat California Tourmaline gemstone rests on a light-colored textured surface, with the text "EARTH'S TREASURY" below.

    3.02-Carat Bubblegum Pink California Tourmaline

    $1,200.00

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  • A 1.14-carat heated Montana sapphire with geometric faceting rests on a textured gray surface; the "Earth's Treasury" logo appears below the gemstone.

    1.14-Carat Medium Blue Montana Sapphire (Heated)

    $2,000.00

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  • The "Theo" ring in 14k rose gold features a 0.48-carat heirloom diamond at its center, shown atop a green leaf with the Earth's Treasury logo beneath.The "Theo" ring in 14k rose gold features a 0.48-carat heirloom diamond set upright and is photographed on a textured gray surface with a rough blue stone in the background.

    The “Theo” Ring

    $2,500.00

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  • The "Carmen" ring in 14k yellow gold, featuring a 1.29-carat Montana sapphire center stone and accent gems on the band, is displayed on a green leaf with the Earth’s Treasury logo below.The "Carmen" ring in 14k yellow gold with a 1.29-carat Montana sapphire stands upright on a textured blue stone, set against a patterned gray background. The Earth's Treasury logo is visible below.

    The “Carmen” Ring

    $1,800.00

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  • The "Amborella" ring in 14K yellow gold with a 0.96-carat Montana sapphire features delicate leaf engravings and rests on a rough blue-green stone atop a textured surface, with the "Earth's Treasury" logo below.The "Amborella" ring in 14K yellow gold with a 0.96-carat Montana sapphire features delicate leaf engravings and rests on a rough blue-green stone atop a textured surface, with the "Earth's Treasury" logo below.

    The “Amborella” 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 14K yellow gold "Blythe" ring with a 0.90-carat Australian sapphire and diamond accents on the band rests on a green leaf, with "EARTH'S TREASURY" at the bottom.The "Blythe" ring in 14K yellow gold showcases a 0.90-carat Australian sapphire and diamond accents, displayed on a blue-green stone with the "Earth's Treasury" logo below.

    The “Blythe” Diamond-Accented Solitaire

    $1,900.00

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  • The "Tango" ring in platinum showcases a 1.39-carat rectangular Montana sapphire at its center with diamond accents on a curved band, displayed on a green plant stem.The "Tango" ring in platinum, featuring a 1.39-carat rectangular light blue Montana sapphire and diamond accents, is displayed upright on rough blue mineral with a patterned background and the "Earth's Treasury" logo below.

    The “Tango” Diamond-Accented Solitaire

    $1,900.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • The "Musette" ring in 20k pink gold features a 3.21-carat Montana sapphire atop a twisted diamond band, showcased on a green leaf with "EARTH'S TREASURY" displayed at the bottom.The "Musette" ring in 20k pink gold, featuring a 3.21-carat Montana sapphire, stands upright on a rough blue stone with a patterned gray backdrop. "Earth's Treasury" is displayed at the bottom.

    The “Musette” Diamond-Accented Solitaire

    $2,100.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • The "Anya" ring in 14k white gold, featuring a 0.74-carat Montana sapphire, is shown on a green leaf with the "Earth's Treasury" logo below.The "Anya" ring in 14k white gold features a 0.74-carat Montana sapphire in a square setting with side diamonds, displayed upright before a blue stone. Below, the words "Earth's Treasury" appear.

    The “Anya” Ring

    $2,450.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page

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.