Rectangle Cushion

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  • A faceted, rectangular 2.03-carat Tanga Garnet gemstone is displayed on a textured gray surface, with "EARTH'S TREASURY" at the bottom.

    2.03-Carat Rose Pink Garnet

    $1,000.00

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  • A 2.24-carat faceted rectangular Tanga Garnet gemstone in vivid pink is displayed on a textured light gray surface with "EARTH'S TREASURY" text at the bottom.

    2.24-Carat Rose Pink Garnet

    $1,100.00

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  • A 2.22-carat Tanga Garnet, rectangular and faceted in deep pink, rests on a textured, light-colored surface with the "Earth's Treasury" logo beneath.

    2.22-Carat Magenta Pink Garnet

    $1,000.00

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  • A 2.28-carat Tanga Garnet, rectangular step-cut with brilliant facets, is displayed on a textured grey surface. The "Earth's Treasury" logo and text appear at the bottom.

    2.28-Carat Bubblegum Pink Garnet

    $1,100.00

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  • A 4.38-carat Tanga Garnet with a radiant cut and intricate facets is showcased on a textured surface, with "EARTH'S TREASURY" visible below.

    4.38-Carat Magenta Pink Garnet

    $2,600.00

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  • A 1.69-carat heated Montana sapphire with a rectangular cut is displayed on a textured gray surface, featuring the "Earth's Treasury" logo and text at the bottom.

    1.69-Carat Rich Blue-Teal Particolored Montana Sapphire (Heated)

    $4,200.00

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  • A rectangular, blue 1.02-carat heated Montana sapphire rests on a textured gray surface with "Earth's Treasury" branding at the bottom.

    1.02-Carat Sky Blue Montana Sapphire (Heated)

    $1,500.00

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  • A 1.37-carat heated Montana sapphire with a rectangular, multi-faceted blue-green appearance is displayed on a textured surface, featuring the text "EARTH'S TREASURY" at the bottom.

    1.37-Carat Deep Peacock Blue Montana Sapphire (Heated)

    $2,500.00

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  • A 1.38-carat heated Montana sapphire, cut in a rectangular blue-green facet, is displayed on a textured light gray surface with "Earth's Treasury" at the bottom.

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

    $2,100.00

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  • A 1.68-carat heated Montana sapphire with intricate facets lies on a textured gray surface. "EARTH'S TREASURY" is printed at the bottom of the image.

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

    $3,700.00

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  • A rectangular, faceted blue 1.73-carat heated Montana sapphire sits on a textured gray surface, with the text "EARTH'S TREASURY" at the bottom.

    1.73-Carat Aqua Blue Montana Sapphire (Heated)

    $2,800.00

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  • A rectangular, faceted 1.99-carat heated Montana sapphire rests on a gray textured surface with "EARTH'S TREASURY" displayed below.

    1.99-Carat Medium Blue Montana Sapphire (Heated)

    $2,950.00

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  • A 2.24-carat heated Montana sapphire with a rectangular faceted cut in blue-green is shown on a textured gray surface, with the "Earth's Treasury" logo below.

    2.24-Carat Aqua Montana Sapphire (Heated)

    $5,700.00

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  • A 1.38-carat heated Montana sapphire with a rectangular, blue-green faceted cut is displayed on a textured light gray surface, with the "EARTH'S TREASURY" text and logo at the bottom.

    1.38-Carat Teal Montana Sapphire (Heated)

    $2,750.00

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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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  • 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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  • 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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  • 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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  • The Pave "Elenin" ring in platinum features a 1.21-carat Montana sapphire and sparkling pavé diamonds on the band, shown resting on a green leaf.The Pave "Elenin" ring in platinum, featuring a 1.21-carat Montana sapphire, is displayed upright on a dark textured stone surface with the Earth's Treasury logo at the bottom.

    The Pave “Elenin” Ring

    $2,100.00

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  • The "Bridget" ring in platinum features a 1.20-carat round Montana sapphire and two rectangular side stones, displayed on a green leaf background. The Earth's Treasury logo is visible at the bottom.The "Bridget" ring in platinum, featuring a 1.20-carat Montana sapphire, is shown upright before a matching rough blue stone on a textured gray surface. The bottom text reads "Earth's Treasury.

    The “Bridget” Three-Stone Ring

    $1,950.00

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  • The "Samia" ring in 14k yellow gold features a 1.73-carat Montana sapphire center with two small clear side stones, displayed on a green leaf with the text “Earth’s Treasury” beneath.The "Samia" ring in 14k yellow gold, featuring a 1.73-carat Montana sapphire, is displayed vertically on a blue stone surface with a geometric patterned background and the Earth's Treasury logo below.

    The “Samia” Three-Stone Ring

    $1,950.00

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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.