Rectangle Cushion

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  • The “Ainsley” ring in 14k white gold with 0.94-Carat Australian SapphireThe “Ainsley” ring in 14k white gold with 0.94-Carat Australian Sapphire

    The “Ainsley” Solitaire

    $1,900.00

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  • The “Toi Et Moi” Emerald-Cut in 14k yellow gold with 1.60-Carat Maine TourmalineThe “Toi Et Moi” Emerald-Cut in 14k yellow gold with 1.60-Carat Maine Tourmaline

    The “Toi Et Moi” with Emerald-Cut Diamond

    $2,650.00

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  • The “Cassiopeia” ring in platinum with 1.08-carat Montana SapphireThe “Cassiopeia” ring in platinum with 1.08-carat Montana Sapphire

    The “Cassiopeia” Diamond-Accented Solitaire

    $2,100.00

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  • The "Alocasia" ring in 18K white gold features a 1.00-carat rectangular Montana sapphire and two round diamonds, shown atop a rough blue crystal with the "Earth's Treasury" logo below.The "Alocasia" ring in 18K white gold features a 1.00-carat rectangular Montana sapphire and two round diamonds, shown atop a rough blue crystal with the "Earth's Treasury" logo below.

    The “Alocasia” Three-Stone Ring

    $2,100.00

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  • A pendant inspired by the "Elowen" ring in platinum, which features a 1.09-carat Montana sapphire at its center, flanked by two white pear-shaped stones, is elegantly set and displayed on a green striped leaf.The "Stacked from 50 images. Method=B (R=8,S=4)" ring stands upright on a textured blue stone, with the Earth’s Treasury logo and name displayed below.

    The “Elowen” Three-Stone Ring

    $2,600.00

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  • The “Chiron” ring in platinum with 1.06-Carat Montana SapphireThe “Chiron” ring in platinum with 1.06-Carat Montana Sapphire

    The “Chiron” Diamond-Accented Solitaire

    $1,950.00

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  • The "Carina" ring in 14k white gold, featuring a 1.53-carat Montana Sapphire flanked by marquise-cut gems, is displayed on a green plant stem. The "Earth's Treasury" logo appears at the bottom, enhancing its elegance.A "Carina" ring in 14k white gold with a 1.53-carat Montana sapphire is shown upright from the side on a textured surface, featuring the "Earth’s Treasury" logo at the bottom.

    The “Carina” Ring

    $2,400.00

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  • The "Cerise" ring in 14k white gold with 1.05-Carat Montana SapphireThe "Cerise" ring in 14k white gold with 1.05-Carat Montana Sapphire

    The “Cerise” Diamond-Accented Solitaire

    $1,800.00

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  • The "Stacked from 61 images. Method=B (R=1,S=4)" pendant features a round blue gemstone with two marquise-cut clear stones, evoking a three-stone ring, set against a green and white leafy background.A minimal ring with a large blue gemstone, "Stacked from 61 images. Method=B (R=1,S=4)", is displayed upright before a matching rough blue stone on a textured grey surface. The "EARTH'S TREASURY" logo appears below.

    The Minimal “Avalon” Three-Stone Hidden Halo Ring

    $2,500.00

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  • 4.53-Carat Sky Blue Ceylon Sapphire (Heated)

    4.53-Carat Sky Blue Ceylon Sapphire (Heated)

    $17,000.00

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  • 2.09-Carat Deep Blue-Green Montana Sapphire (Heated)

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

    $3,100.00

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  • A 2.26-carat Sky Blue Ceylon Sapphire in a cushion cut is displayed on a textured surface with a watermark reading "Earth's Treasury.

    2.26-Carat Sky Blue Ceylon Sapphire

    $4,520.00

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  • The 1.23-Carat Teal Blue Montana Sapphire, with brilliant facets, is shown on a textured metallic background with "EARTH'S TREASURY" displayed beneath.

    1.23-Carat Teal Blue Montana Sapphire

    $2,150.00

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  • 1.64-Carat Deep Blue Montana Sapphire

    1.64-Carat Deep Blue Montana Sapphire

    $4,900.00

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  • A 1.24-carat pink Madagascar sapphire, cushion-cut and faceted, displayed on a textured gray surface with the brand name "EARTH'S TREASURY" at the bottom.

    0.98-Carat Hot Pink Madagascar Sapphire

    $980.00

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  • A 1.24-carat cushion-cut pink Madagascar sapphire displayed on a textured metallic surface. The bottom of the image features the logo and text "Earth's Treasury.

    0.98-Carat Hot Pink Madagascar Sapphire

    $980.00

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  • A 1.24-carat pink Madagascar sapphire, expertly cut into a square shape to enhance its sparkle and clarity, is displayed on a textured, angular metallic surface. The text "Earth's Treasury" is visible at the bottom of the image.

    0.99-Carat Lilac Pink Madagascar Sapphire

    $990.00

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  • A cushion-cut 1.24-Carat Pink Madagascar Sapphire with a brilliant shine is placed on a textured grey surface. The image has the text "EARTH'S TREASURY" at the bottom along with a geometric logo.

    1.01-Carat Hot Pink Madagascar Sapphire

    $1,000.00

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  • The 1.08-Carat Hot Pink Madagascar Sapphire, in a cushion cut, beautifully rests on a textured gray surface.

    1.08-Carat Hot Pink Madagascar Sapphire

    $1,080.00

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  • A vibrant 1.24-carat pink Madagascar sapphire with a rectangular cushion cut is placed on a textured, metallic background. The stone sparkles with light reflections, and beneath it is the text "EARTH'S TREASURY" accompanied by a geometric logo.

    1.13-Carat Purplish Pink Madagascar Sapphire

    $1,150.00

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  • A vibrant, cushion-cut pink Madagascar sapphire is displayed on a textured metallic surface. The gem features multiple facets that reflect light, enhancing its radiant appearance. The background has a geometric pattern, and the text "EARTH'S TREASURY" is seen below the image.

    1.13-Carat Purplish Pink Madagascar Sapphire

    $1,150.00

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  • The "Morrigan" platinum ring, featuring a 1.64-carat hexagonal Montana sapphire and two triangular clear stones, is displayed on a green leaf.The "Morrigan" ring in platinum, featuring a 1.64-carat Montana sapphire and two clear side stones, is shown upright on a rough blue-green mineral, with the "Earth's Treasury" logo beneath.

    The “Morrigan” Ring

    $4,500.00

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  • The "Mila" in 14k rose gold, hammered and brushed, with 1.93-Carat Montana SapphireThe "Mila" in 14k rose gold, hammered and brushed, with 1.93-Carat Montana Sapphire

    The “Mila” Solitaire

    $1,700.00

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  • The "Multiflora" ring in 14k white gold with 1.53-Carat Montana SapphireThe "Multiflora" ring in 14k white gold with 1.53-Carat Montana Sapphire

    The “Multiflora” Trellis Three-Stone Ring

    $2,450.00

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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.