Classic Diamond Round Brilliant

Showing 25–48 of 621 resultsSorted by latest

  • A 1.23-carat spruce green Montana sapphire (heated), round-cut, showcased on a textured surface with the “Earth’s Treasury” text and hexagonal logo below the gemstone.

    1.23-Carat Spruce Green Montana Sappire (Heated)

    $1,650.00

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  • 1.43-carat rich orange Montana sapphire (heated), round faceted, displayed on a textured light surface with the “EARTH’S TREASURY” logo and text at the bottom.

    1.43-Carat Rich Orange Montana Sapphire (Heated)

    $1,700.00

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  • A 1.43-carat steely sky blue Montana sapphire (heated) with a round brilliant cut is displayed on a light textured surface. The Earth’s Treasury logo appears at the bottom.

    1.43-Carat Steely Sky Blue Montana Sapphire (Heated)

    $2,850.00

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  • A 1.43-carat opalescent golden yellow Montana sapphire (heated), cut in a round brilliant style, shimmers with yellow and orange hues as it reflects light on a textured surface; the “Earth’s Treasury” logo is featured at the bottom of the image.

    1.43-Carat Opalescent Orange Montana Sapphire (Heated)

    $1,700.00

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  • A round, faceted 1.50-carat mint green Montana sapphire (heated) with greenish-yellow hues is displayed on a textured light surface, featuring the “Earth’s Treasury” logo and text at the bottom.

    1.50-Carat Mint Green Montana Sapphire (Heated)

    $3,300.00

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  • A round, faceted 1.56-carat golden yellow Montana sapphire (heated) is displayed on a textured, light-colored surface with the text “Earth’s Treasury” below.

    1.56-Carat Golden Yellow Montana Sapphire (Heated)

    $2,700.00

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  • A 2.72-carat round brilliant-cut Montana sapphire is displayed on a textured gray surface, with "EARTH'S TREASURY" written below.

    2.72-Carat Sky Blue Montana Sapphire

    $10,800.00

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  • A 1.47-carat Montana sapphire, expertly cut in a round brilliant style, rests on a textured gray surface with "Earth's Treasury" displayed at the bottom.

    1.47-Carat Near-Colorless Montana Sapphire

    $3,400.00

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  • A round, faceted 1.08-carat peacock blue-teal particolored Montana sapphire (heat) rests on a textured gray surface. The Earth’s Treasury logo and text are displayed at the bottom of the image.

    1.08-Carat Peacock Blue-Teal Particolored Montana Sapphire (Heated)

    $1,600.00

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  • 1.10-carat medium blue Montana sapphire (heated), round brilliant-cut, displayed on a textured gray surface with the "Earth's Treasury" logo and text at the bottom.

    1.10-Carat Medium Blue Montana Sapphire (Heated)

    $2,100.00

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    Add to cartDone
  • A 1.11-carat sky blue to violet color-change Montana sapphire is placed on a textured grey surface, with the “EARTH’S TREASURY” text and a hexagon logo visible at the bottom.

    1.11-Carat Sky Blue Montana Sapphire (Heated)

    $1,650.00

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    Add to cartDone
  • 1.21-Carat Rich Blue Montana Sapphire (Heated) shown upright in a round brilliant cut on a textured light-colored surface, with the Earth’s Treasury logo displayed at the bottom.

    1.21-Carat Rich Blue Montana Sapphire (Heated)

    $2,000.00

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    Add to cartDone
  • 1.25-carat teal blue Montana sapphire (heated) with multiple facets displayed on a textured surface, featuring the words “EARTH’S TREASURY” and a hexagonal logo below.

    1.25-Carat Teal Blue Montana Sapphire (Heated)

    $1,200.00

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  • A 1.30-carat blue-yellow to violet-yellow particolored color-change gemstone, expertly round brilliant-cut, is displayed upright on a textured metallic surface with "Earth's Treasury" text at the bottom.

    1.30-Carat Teal-Yellow Particolored Montana Sapphire (Heated)

    $2,600.00

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    Add to cartDone
  • A 1.49-carat teal blue to violet color-change Montana sapphire with faceted cuts displayed on a textured light background, featuring the "Earth's Treasury" logo and text at the bottom.

    1.49-Carat Teal to Violet Color-Change Montana Sapphire (Heated)

    $2,500.00

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    Add to cartDone
  • A round, faceted 1.55-carat medium blue to purple color-change Montana sapphire is displayed on a textured silver surface, with the "Earth's Treasury" logo and text at the bottom.

    1.55-Carat Sky Blue to Purple Color-Change Montana Sapphire (Heated)

    $2,900.00

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    Add to cartDone
  • A 1.61-carat, round brilliant-cut Montana sapphire—exhibiting a striking color change from teal blue to purple—is displayed upright on a textured gray surface, with the text "EARTH'S TREASURY" beneath it.

    1.61-Carat Teal Blue to Violet Color-Change Montana Sapphire (Heated)

    $2,950.00

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    Add to cartDone
  • A 1.71-carat teal to violet blue color-change Montana sapphire, cut in a round brilliant style, is displayed on a textured surface. The Earth's Treasury logo and name appear at the bottom of the image.

    1.71-Carat Teal to Violet Blue Color-Change Montana Sapphire (Heated)

    $3,300.00

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    Add to cartDone
  • 1.82-carat Montana teal to violet blue color-change sapphire, round brilliant-cut, displayed on a textured surface with the "Earth's Treasury" logo and text at the bottom.

    1.82-Carat Montana Teal to Violet Blue Color-Change Sapphire (Heated)

    $4,550.00

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    Add to cartDone
  • A 1.66-carat aqua to steely blue-gray color-change Montana sapphire, cut into a round, faceted shape, is displayed upright on a textured surface with the words "Earth's Treasury" below it.

    1.66-Carat Mint Green to Gray Color-Change Montana Sapphire (Heated)

    $3,200.00

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    Add to cartDone
  • A 0.74-carat round-cut Montana sapphire shines on a textured gray surface with the "Earth's Treasury" logo at the bottom.

    0.74-Carat Light Pink Montana Sapphire

    $950.00

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  • A 2.33-carat round brilliant-cut Montana sapphire is displayed on a textured gray surface, with the "Earth's Treasury" logo and text beneath it.

    2.33-Carat Rich Teal Montana Sapphire

    $9,200.00

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    Add to cartDone
  • A 1.30-carat Montana sapphire with a round brilliant cut rests on a textured gray surface, with "Earth's Treasury" visible at the bottom.

    1.30-Carat Near-Colorless Montana Sapphire

    $2,500.00

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    Add to cartDone
  • A 1.25-carat medium blue Montana sapphire (heated), round brilliant-cut, is displayed on a textured surface with the text "EARTH'S TREASURY" beneath it.

    1.25-Carat Medium Blue Montana Sapphire (Heated)

    $1,300.00

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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.