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  • The "Minna" ring in 14K white gold with a 1.07-carat Montana sapphire is displayed on a green, striped leaf. The curved, modern design and the "Earth’s Treasury" logo are visible below.The "Minna" ring in 14K white gold featuring a 1.07-carat Montana sapphire sits on a rough blue stone atop a textured gray surface, with the "Earth's Treasury" logo displayed below.

    The “Minna” Solitaire

    $2,050.00

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  • The “Alani” ring in 14k white gold with a 1.28-carat Montana sapphire is displayed on a green background, accented by six small round diamonds and the "Earth's Treasury" jewelry logo below.The Stacked from 55 images. Method=B (R=1,S=1) ring with a large blue gemstone is displayed upright against a rough blue stone on a textured gray surface, with the Earth’s Treasury logo at the bottom.

    The “Alani” Cluster Ring

    $2,300.00

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  • The “Serafina” Halo Ring in 18k yellow gold with 1.21-carat Montana sapphireThe “Serafina” Halo Ring in 18k yellow gold with 1.21-carat Montana sapphire

    The “Serafina” Halo Ring

    $3,050.00

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  • The “Ivey” ring in platinum with 1.64-Carat Montana SapphireThe “Ivey” ring in platinum with 1.64-Carat Montana Sapphire

    The “Ivey” Solitaire

    $1,950.00

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  • The “Holly” Ring in 14k yellow gold with 2.43-Carat Montana SapphireThe “Holly” Ring in 14k yellow gold with 2.43-Carat Montana Sapphire

    The “Holly” Cluster Ring

    $2,500.00

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  • The "Posey" ring in 14k rose gold features a 1.38-carat Montana sapphire center gemstone with marquise-shaped white side stones, displayed on a green leaf with the Earth’s Treasury logo below.The "Posey" ring in 14k rose gold with a 1.38-carat Montana sapphire is displayed on a blue mineral and patterned surface.

    The “Posey” Cluster Ring

    $3,200.00

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  • The "Linden" Ring in Platinum with 1.76-Carat Montana SapphireThe "Linden" Ring in Platinum with 1.76-Carat Montana Sapphire

    The “Linden” Ring

    $2,450.00

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  • The “Briar” in Platinum with 2.05-Carat Montana SapphireThe “Briar” in Platinum with 2.05-Carat Montana Sapphire

    The “Briar” Diamond-Accented Solitaire

    $2,450.00

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  • The "Deliah" ring in 14k yellow gold with 1.82-carat Montana sapphireThe "Deliah" ring in 14k yellow gold with 1.82-carat Montana sapphire

    The “Deliah” Ring

    $2,900.00

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    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • A blue Montana sapphire in our "Testudo" oval design

    1.01-Carat Deep Blue Montana Sapphire (Heated)

    $900.00

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  • An aqua Montana sapphire in our "Hyperbola" oval design

    1.11-Carat Pale Aqua-Sky Particolored Montana Sapphire (Heated)

    $1,350.00

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  • A 1.25-carat Sky Blue Montana Sapphire (heated) with a starburst cut is shown on a textured gray surface, featuring the "Earth's Treasury" logo at the bottom.

    1.25-Carat Sky Blue Montana Sapphire (Heated)

    $2,300.00

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  • 1.67-Carat Deep Blue-Green and Yellow Particolored Montana Sapphire (Heated)

    1.67-Carat Deep Blue-Green and Yellow Particolored Montana Sapphire (Heated)

    $2,900.00

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  • A 1.40-carat Yellow-Gold Particolored Montana Sapphire (Heated) with intricate faceting rests on a textured surface, featuring the Earth's Treasury logo and name at the bottom.

    1.40-Carat Yellow-Gold Particolored Montana Sapphire (Heated)

    $2,700.00

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  • 1.63-Carat Orange Montana Sapphire (Heated)

    1.63-Carat Orange Montana Sapphire (Heated)

    $3,700.00

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  • 1.16-Carat Aqua Blue Montana Sapphire (Heated)

    1.16-Carat Aqua Blue Montana Sapphire (Heated)

    $1,700.00

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  • A 1.35-carat Aqua Blue Montana Sapphire (heated, cushion-cut) is shown on a textured gray surface with "EARTH'S TREASURY" and logo at the bottom.

    1.35-Carat Aqua Blue Montana Sapphire (Heated)

    $2,500.00

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  • A blue Montana sapphire in our "Hyperbola" oval design

    0.94-Carat Teal Blue Montana Sapphire (Heated)

    $900.00

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  • A blue Montana sapphire in our "Hyperbola" oval design

    0.95-Carat Sky Blue Montana Sapphire (Heated)

    $700.00

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  • A blue Montana sapphire in our "Hyperbola" oval design

    1.23-Carat Sky Blue Montana Sapphire (Heated)

    $1,300.00

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  • 0.96-Carat Rich Blue Montana Sapphire (Heated)

    0.96-Carat Rich Blue Montana Sapphire (Heated)

    $950.00

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  • A 1.42-carat sky blue Montana sapphire (heated) rests on a textured surface, with the "Earth's Treasury" logo and text displayed at the bottom.

    1.42-Carat Sky Blue Montana Sapphire (Heated)

    $2,700.00

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  • A blue Montana sapphire in our "Hyperbola" oval design

    0.90-Carat Rich Blue-Teal Particolored Montana Sapphire (Heated)

    $900.00

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  • A yellow Montana sapphire in our "Serendipity" oval design

    1.28-Carat Pale Yellow-Gold Particolored Montana Sapphire (Heated)

    $1,600.00

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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.