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  • 1.32-carat medium blue heated Montana sapphire with intricate facets shown on a textured gray surface; "Earth's Treasury" logo and text visible at the bottom.

    1.32-Carat Medium Blue Montana Sapphire (Heated)

    $2,600.00

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  • A 1.33-carat medium blue heated Montana Sapphire gemstone is displayed on a textured light brown surface with the Earth's Treasury logo at the bottom.

    1.33-Carat Medium Blue Montana Sapphire (Heated)

    $1,995.00

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  • 1.47-Carat Medium Blue Montana Sapphire (Heated), round brilliant-cut, showcased on a textured gray surface with the Earth's Treasury logo and text at the bottom.

    1.47-Carat Medium Blue Montana Sapphire (Heated)

    $2,900.00

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  • A 1.47-carat rich blue Montana Sapphire (heated), round and faceted, rests on a textured gray surface with “EARTH'S TREASURY” and a hexagonal logo shown below.

    1.47-Carat Rich Blue Montana Sapphire (Heated)

    $2,500.00

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  • 1.49-carat medium blue heated Montana Sapphire, round brilliant-cut, displayed on a textured background with the "Earth's Treasury" logo and text at the bottom.

    1.49-Carat Medium Blue Montana Sapphire (Heated)

    $2,900.00

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  • A blue Montana sapphire in a classic diamond round brilliant design

    1.63-Carat Teal Blue Montana Sapphire (Heated)

    $3,200.00

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  • A 1.64-carat rich blue Montana Sapphire (heated), brilliantly round-cut, glimmers on a textured gray surface. The "EARTH'S TREASURY" logo and text are displayed at the bottom of the image.

    1.64-Carat Rich Blue Montana Sapphire (Heated)

    $3,300.00

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  • A 1.79-Carat Teal Blue Montana Sapphire (Heated) is displayed on a textured light gray surface with "Earth's Treasury" and a hexagon logo beneath.

    1.79-Carat Teal Blue Montana Sapphire (Heated)

    $2,400.00

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  • The "Arethusa" ring in platinum features a 2.65-carat round Montana sapphire and smaller clear stones along the band, shown on a green leaf with "Earth's Treasury" below—an exquisite, nature-inspired jewelry design.The "Arethusa" ring in platinum, featuring a 2.65-carat Montana sapphire, is displayed upright on a textured surface with the Earth's Treasury logo at the bottom.

    The “Arethusa” Ring

    $2,800.00

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  • The "Meissa" ring in 14K white gold with a 1.47-carat Montana sapphire and diamond band rests on a green leaf, with the Earth's Treasury logo visible at the bottom of the image.The "Meissa" ring in 14K white gold with a 1.47-carat rectangular Montana sapphire stands upright, a blue textured stone behind it and the Earth’s Treasury logo below.

    The Classic Pave “Meissa” Ring

    $2,450.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • A 1.97-carat deep blue Montana sapphire (heated) in a round brilliant cut is displayed on a textured gray surface, with the "Earth's Treasury" logo and text below.

    1.97-Carat Deep Blue Montana Sapphire (Heated)

    $3,800.00

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  • A 1.79-carat rich blue Montana Sapphire (heated) in round brilliant cut rests on a textured, light surface with the "Earth's Treasury" logo below.

    1.79-Carat Rich Blue Montana Sapphire (Heated)

    $3,100.00

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  • A blue Montana sapphire in a classic diamond round brilliant design

    0.94-Carat Medium Blue Montana Sapphire (Heated)

    $750.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.79-Carat Medium Blue Montana Sapphire (Heated)

    $790.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.84-Carat Medium Blue Montana Sapphire (Heated)

    $760.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.93-Carat Rich Blue Montana Sapphire (Heated)

    $1,050.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.93-Carat Medium Blue Montana Sapphire (Heated)

    $1,050.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.93-Carat Medium Blue Montana Sapphire (Heated)

    $930.00

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  • A blue-green Montana sapphire in an Old European-style cut (OEC)

    0.93-Carat Aqua Blue Montana Sapphire (Heated)

    $900.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.94-Carat Medium Blue Montana Sapphire (Heated)

    $940.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.94-Carat Medium Blue Montana Sapphire (Heated)

    $1,200.00

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    Add to cartDone
  • A blue Montana sapphire in an Old European-style cut (OEC)

    0.96-Carat Rich Blue Montana Sapphire (Heated)

    $1,200.00

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  • A blue-green Montana sapphire in an Old European-style cut (OEC)

    0.96-Carat Peacock Blue Montana Sapphire (Heated)

    $1,250.00

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  • A blue Montana sapphire in an Old European-style cut (OEC)

    1.04-Carat Rich Blue Montana Sapphire (Heated)

    $1,500.00

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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.