Rectangle Cushion

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  • A 3.96-carat heated Ceylon sapphire gemstone with a cushion cut is displayed on a textured surface, featuring the "Earth's Treasury" logo at the bottom.

    3.96-Carat Cornflower Blue Ceylon Sapphire (Heated)

    $17,800.00

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  • A 2.04-carat heated Ceylon sapphire rests on a textured metallic surface with the "Earth's Treasury" logo at the bottom.

    2.04-Carat Rich Blue Ceylon Sapphire (Heated)

    $3,700.00

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  • A rectangular, faceted 2.01-carat pastel pyrope garnet with visible inclusions sits on a gray patterned background, with "EARTH'S TREASURY" beneath it.

    Light Magenta Purple to Pink Color Change Pastel Pyrope GarnetLight Magenta Purple Pastel Pyrope Garnet

    $1,600.00

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  • A 2.17-carat Spessartine Garnet, a faceted orange-red gemstone, is displayed on a textured gray surface with "EARTH'S TREASURY" at the bottom.

    2.17-Carat Rich Orange Spessartine Garnet

    $1,700.00

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  • A 2.44-carat Indicolite Tourmaline with an emerald cut is displayed on a textured gray surface. The teal-colored, faceted gemstone sits above the "EARTH'S TREASURY" logo at the bottom of the image.

    2.44-Carat Rich Teal Blue Indicolite Tourmaline

    $1,950.00

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  • A rectangular, faceted blue-green 2.15-carat Montana Sapphire rests on a textured surface featuring the "Earth's Treasury" logo and text below it.

    2.15-Carat Aqua Montana Sapphire

    $8,150.00

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  • A Custom ring in platinum with a 1.27-carat Montana sapphire center, surrounded by small clear diamonds, is displayed on a green leaf.The "Celisse" ring in platinum, featuring a 1.27-carat Montana sapphire, is displayed on a rough blue mineral, with the "Earth's Treasury" logo below.

    The “Celisse” Halo Ring

    $2,200.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • The "Josephine" ring in 18K white gold, featuring a 1.60-carat Ceylon sapphire with a prong-set halo of diamonds, is displayed on a blue-green gemstone against a patterned gray background with the "Earth's Treasury" logo below.The "Josephine" ring in 18K white gold, featuring a 1.60-carat Ceylon sapphire with a prong-set halo of diamonds, is displayed on a blue-green gemstone against a patterned gray background with the "Earth's Treasury" logo below.

    The “Josephine” Halo Ring

    $3,100.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • A 3.06-carat Ceylon sapphire with a cushion cut is shown on a textured gray surface, featuring the text "Earth's Treasury" at the bottom.

    3.06-Carat Pinkish Purple Ceylon Sapphire

    $13,300.00

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  • A 2.20-carat Ceylon sapphire with a faceted light blue hue is displayed on a textured, light surface, showcasing the words "EARTH'S TREASURY" at the bottom.

    2.20-Carat Sky Blue Ceylon Sapphire

    $6,900.00

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  • A faceted 2.09-carat Cornflower Blue Sapphire cushion-cut gemstone from "I see the strange light but it seems to come through at every an" rests on a textured gray surface, with "EARTH'S TREASURY" printed beneath.

    2.09-Carat Cornflower Blue Ceylon Sapphire

    $4,900.00

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  • A 1.34-carat heated Montana sapphire with blue-green hues and a rectangular step cut is displayed on a textured light gray surface above the Earth's Treasury logo.

    1.34-Carat Aqua-Mint Particolored Montana Sapphire (Heated)

    $1,600.00

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  • A 2.33-carat heated Montana sapphire in a rectangular cut with multiple facets sits on a textured gray surface. "Earth's Treasury" is shown at the bottom.

    2.33-Carat Peacock Blue Montana Sapphire (Heated)

    $5,950.00

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  • A 2.80-carat heated Montana sapphire, rectangular and faceted, rests on a light textured surface with "Earth's Treasury" and logo below.

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

    $8,350.00

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  • A 1.51-carat Ceylon sapphire, cushion-cut and purple, is shown on a textured silver-gray surface with the text "EARTH'S TREASURY" below.

    1.51-Carat Violet to Purple Color Change Ceylon Sapphire

    $3,000.00

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  • A faceted, cushion-cut 1.63-carat Ceylon Sapphire with a bluish-purple hue is displayed on a textured metallic surface. The text "Earth's Treasury" appears at the bottom.

    1.63-Carat Purple Ceylon Sapphire

    $3,200.00

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  • A 4.87-carat Ceylon sapphire, cut in a rectangular faceted shape, rests on a textured gray surface with "Earth's Treasury" written below.

    4.87-Carat Light Yellow Ceylon Sapphire

    $7,900.00

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  • A 2.88-carat Ceylon sapphire with a cushion cut is shown on a textured gray surface, featuring the "Earth's Treasury" text below.

    2.88-Carat Sky Blue Ceylon Sapphire

    $10,500.00

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  • A 2.16-carat sapphire is displayed on a textured, pale surface with the text "EARTH'S TREASURY" at the bottom.

    2.16-Carat Light Spruce Green Sapphire

    $4,500.00

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  • A 2.03-carat heated Ceylon sapphire, cut in a rectangular cushion shape, is showcased on a textured gray surface with "EARTH'S TREASURY" at the bottom.

    2.03-Carat Colorless Ceylon Sapphire (Heated)

    $1,900.00

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  • A 2.11-carat heated sapphire with a square cut and blue-green hue rests on a textured gray surface, with "Earth's Treasury" displayed at the bottom.

    2.11-Carat Spruce Green Madagascar Sapphire (Heated)

    $5,800.00

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  • A 2.58-carat heated cushion-cut sapphire is showcased on a textured metallic background with “Earth’s Treasury” at the bottom.

    2.58-Carat Rich Green Madagascar Sapphire (Heated)

    $7,200.00

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    Add to cartDone
  • A 1.18-carat cushion-cut Ceylon sapphire (heated) is showcased on a textured gray surface with the "Earth's Treasury" logo below it.

    1.18-Carat Purplish Pink Ceylon Sapphire (Heated)

    $2,300.00

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    Add to cartDone
  • A 1.04-carat heated Montana sapphire with a cushion cut rests on a textured gray metallic surface, featuring the text "Earth's Treasury" below.

    1.04-Carat Violet-Blue to Purple Color-Change Montana Sapphire (Heated)

    $1,100.00

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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.