Square Cushion

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  • A 1.49-carat cushion-cut spinel rests on a textured gray surface, with "Earth's Treasury" displayed at the bottom.

    1.49-Carat Deep Red Spinel

    $3,000.00

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  • A 1.67-carat cushion-cut spinel is shown on a light gray textured surface with the text "Earth's Treasury" below.

    1.67-Carat Red Spinel

    $2,950.00

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  • A 2.04-carat, cushion-cut spinel in light purple is displayed on a textured gray background with the text "EARTH'S TREASURY" below.

    2.04-Carat Light Lavender Spinel

    $2,500.00

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  • A faceted, light yellow 1.37-carat heated Montana sapphire is displayed on a patterned gray surface with "EARTH'S TREASURY" text at the bottom.

    1.37-Carat Pale Yellow-Orange Particolored Montana Sapphire (Heated)

    $2,050.00

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  • A 1.48-carat heated Montana sapphire in cushion cut with intricate facets is displayed on a textured gray surface, featuring the Earth's Treasury logo at the bottom.

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

    $3,000.00

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  • A 1.05-Carat Montana Sapphire in cushion cut and light aqua blue is shown on a textured surface with "EARTH'S TREASURY" text at the bottom.

    1.05-Carat Aqua Blue Montana Sapphire

    $2,100.00

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  • A faceted blue-green 2.18-carat Montana Sapphire (Heated) with a geometric cut rests on a textured gray surface; “EARTH'S TREASURY” is printed below the gem.

    2.18-Carat Aqua Green Montana Sapphire (Heated)

    $6,100.00

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  • A 1.30-carat cushion-cut heated Montana sapphire with intricate facets is displayed on a textured gray surface. The "Earth's Treasury" logo appears at the bottom.

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

    $1,550.00

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  • A faceted 1.08-carat heated Montana sapphire in blue-green rests on a textured surface, with "EARTH’S TREASURY" and its logo visible at the bottom of the image.

    1.08-Carat Deep Blue-Green Montana Sapphire (Heated)

    $1,200.00

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  • A 1.62-carat heated Montana Sapphire with visible inclusions and a cushion cut rests on a textured gray surface, with the "Earth's Treasury" logo displayed at the bottom of the image.

    1.62-Carat Peacock Blue Montana Sapphire (Heated)

    $2,000.00

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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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  • 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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  • A square, green gemstone placed on a textured surface with the label "1.10-Carat Australian Sapphire (Heated)" underneath.

    1.10-Carat Olive Green Australian Sapphire (Heated)

    $1,400.00

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  • A 1.23-carat Australian sapphire (heated), showcasing green and yellow facets, rests on a textured gray surface.

    1.23-Carat Lime-Green Particolored Australian Sapphire (Heated)

    $2,150.00

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  • A 2.12-carat heated Australian sapphire with a faceted square shape and checkerboard pattern set on a textured gray surface.

    2.12-Carat Midnight Blue-Green Particolored Australian Sapphire (Heated)

    $2,500.00

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  • A 2.40-carat cushion-cut Montana sapphire with a blue hue is showcased on a textured surface featuring the "Earth's Treasury" logo.

    2.40-Carat Deep Peacock Blue Montana Sapphire (Heated)

    $3,800.00

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  • A faceted blue 0.82-carat Montana sapphire (heated) displayed on a textured surface with "Earth's Treasury" below.

    0.82-Carat Blue-Lavender Particolored Montana Sapphire (Heated)

    $850.00

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  • A 1.55-carat Ceylon sapphire in a cushion cut sits on a textured surface with the "Earth's Treasury" logo at the bottom.

    1.55-Carat Light Violet-Blue Ceylon Sapphire

    $3,600.00

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  • The 1.54-Carat Ceylon Sapphire, a faceted rectangular blue gemstone with a sparkling surface, is displayed on a textured gray background.

    1.54-Carat Sky Blue Ceylon Sapphire

    $3,500.00

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  • Cushion-cut 1.10-Carat Ceylon Sapphire (Heated) on a textured surface, with "Earth's Treasury" below.

    1.10-Carat Cornflower Blue Celyon Sapphire (Heated)

    $1,650.00

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  • 3.05-Carat Ceylon Sapphire, a faceted gemstone with a hexagonal shape on a textured surface. Text reads "Earth's Treasury" below.

    3.05-Carat Light Violet-Blue Ceylon Sapphire

    $12,300.00

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  • A 0.99-carat heated Montana Sapphire in a faceted cut, displayed on a textured gray surface with the text "Earth's Treasury" at the bottom.

    0.99-Carat Yellow Montana Sapphire (Heated)

    $800.00

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  • A faceted cushion-cut blue 1.27-carat Montana Sapphire (heated) on a textured surface with the text "Earth's Treasury" below.

    1.27-Carat Teal Blue Montana Sapphire (Heated)

    $2,200.00

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  • The "Celosia" ring in 14k yellow gold, featuring a 1.86-carat Montana sapphire center and accented by smaller clear stones, is displayed on a green leaf against a metallic backdrop.Gold ring named "Celosia" in 14k yellow gold with a 1.86-carat Montana sapphire, displayed on a textured surface background. The name "Earth's Treasury" appears at the bottom.

    The “Celosia” Seven-Stone Ring

    $2,750.00

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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.