3.5 mm

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  • A pair of EA-MS-401 4.0mm silver stud earrings with round blue gemstones, one on a rough blue stone, displayed on a textured gray surface. Earth’s Treasury logo appears at the bottom.A size comparison between 3.5mm, 4.0mm, and 4.5mm size light aqua blue Montana sapphire earrings

    Montana Sapphire Earrings- White Gold, Light Aqua Blue, 3.5-5.0 mm (Heated)

    $449.00

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  • The EA-MS-402 4.0mm silver stud earrings feature round blue gemstones, shown on a rough blue stone with a patterned gray background.A size comparison between 3.5mm, 4.0mm, and 4.5mm size medium blue Montana sapphire earrings

    Montana Sapphire Earrings- White Gold, Medium Blue, 3.5-5.0 mm (Heated)

    $449.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • A pair of EA-MS-403 4.0mm silver stud earrings with round blue gemstones, one upright and one flat, displayed on a textured surface with a blue stone.A size comparison between 3.5mm, 4.0mm, and 4.5mm size rich blue Montana sapphire earrings

    Montana Sapphire Earrings- White Gold, Rich Blue, 3.5-5.0 mm (Heated)

    $549.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • A pair of EA-MS-404 4.0mm blue gemstone stud earrings in silver settings sits beside a rough blue stone on a textured surface, with the "Earth's Treasury" logo displayed below.A size comparison between 3.5mm, 4.0mm, and 4.5mm size teal Montana sapphire earrings

    Montana Sapphire Earrings- White Gold, Teal Blue, 3.5-5.0 mm (Heated)

    $449.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • EA-MS-405 4.0mm green gemstone stud earrings in silver settings, shown with a rough blue gemstone on a textured surface. "Earth's Treasury" logo appears at the bottom.EA-MS-405 4.0mm green gemstone stud earrings in silver settings, shown with a rough blue gemstone on a textured surface. "Earth's Treasury" logo appears at the bottom.

    Montana Sapphire Earrings- White Gold, Mint Green, 3.5-5.0 mm (Heated)

    $449.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • The FJ-NEC-101 4.5mm gold bezel slide necklace features a round teal blue gemstone pendant, showcased against a light, textured background. "EARTH'S TREASURY" is displayed at the bottom.The "Shimmer" necklace, 4.5mm, in 14k rose gold

    The “Shimmer” Montana Sapphire Bezel Slide Necklace – Teal Blue, 3.5-4.5 mm (Heated)

    $699.00

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  • The EA-DB-401 earrings, adorned with sparkling light blue sapphires, are showcased on a rough blue stone. The textured light gray background enhances the depth and contrast, highlighting the refined elegance of these stunning accessories.A color comparison between light, medium, and dark blue sapphire earrings

    Light Blue Sapphire Earrings, 3.5-5.0 mm (Heated)

    $499.00

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  • The EA-DB-402 earrings elegantly feature medium blue sapphires, each gemstone adding a sophisticated touch, beautifully set on a textured silver surface.A size comparison between 3.5mm, 4.0mm, and 4.5mm size medium blue sapphire earrings

    Medium Blue Sapphire Earrings, 3.5-5.0 mm (Heated)

    $649.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • The EA-DB-403 earrings are a stunning pair featuring blue sapphire gemstones measuring 3.5-5.0 mm, set in silver, elegantly displayed on a textured surface and teal block.A size comparison between 3.5mm, 4.0mm, and 4.5mm size deep blue sapphire earrings

    Rich Blue Sapphire Earrings, 3.5-5.0 mm (Heated)

    $799.00

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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.