Square Cushion

Showing 1–24 of 626 resultsSorted by latest

  • A 1.46-carat lilac-teal particolored Montana sapphire rests on a textured surface, with the “Earth’s Treasury” logo displayed at the bottom center.

    1.46-Carat Lilac-Teal Particolored Montana Sapphire (Heated)

    $2,900.00

    -

    Add to cartDone
  • The "Everly" Three-Stone Ring in Platinum 950 with a 1.83-Carat Peacock Blue Montana Sapphire (Heated), a large square-cut blue gemstone flanked by two triangular clear stones on each side, displayed on a green and gray striped surface.The "Everly" Three-Stone Ring in Platinum 950 with a 1.83-Carat Peacock Blue Montana Sapphire (Heated)—is displayed upright on a textured surface, with “EARTH’S TREASURY” and a geometric logo at the bottom.

    The “Everly” Three-Stone Ring

    $3,100.00

    -

    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • A gold “Althea” ring with an oval blue gemstone center, accented by four marquise diamonds and four small blue stones, displayed on a green stem.Althea gold ring featuring a dark center stone secured by four prongs and flanked by two side stones, showcased upright on a blue textured rock. “Earth’s Treasury” logo appears at the bottom.

    The “Althea” Ring

    $2,600.00

    -

    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • The "Eden" Halo Ring, featuring a round pink gemstone at the center surrounded by small clear stones, displayed on a green patterned surface with “Earth’s Treasury” at the bottom.The "Eden" Halo Ring featuring an oval pink gemstone and marquise diamonds, displayed upright on a textured dark stone with the Earth’s Treasury logo visible at the bottom of the image.

    The “Eden” Halo Ring

    $2,500.00

    -

    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • The "Cara" ring featuring a round green gemstone and a twisted band adorned with small diamonds, displayed on a green striped surface with the Earth’s Treasury logo at the bottom.The "Cara" ring is displayed upright on a rough blue stone, featuring a decorative top with a patterned surface and the Earth’s Treasury logo beneath.

    The “Cara” Ring

    $2,350.00

    -

    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • A 1.56-carat heated Montana sapphire is displayed on a textured surface, with the words “EARTH’S TREASURY” and a hexagonal logo beneath it.

    1.56-Carat Teal-Green Particolored Montana Sapphire (Heated)

    $3,200.00

    -

    Add to cartDone
  • A 1.80-carat cushion-cut Montana sapphire (heated) rests on a textured surface, with the “Earth’s Treasury” logo and text displayed below it.

    1.80-Carat Rich Teal Blue Montana Sapphire (Heated)

    $4,900.00

    -

    Add to cartDone
  • A faceted, cushion-cut 1.85-carat pale blue-yellow particolored Montana sapphire (heated) rests on a textured surface. The "Earth's Treasury" logo and text are displayed at the bottom of the image.

    1.85-Carat Pale Blue-Yellow Particolored Montana Sapphire (Heated)

    $2,800.00

    -

    Add to cartDone
  • A 1.91-carat, cushion-cut aqua blue Montana sapphire (heated) rests on a textured surface with the logo and text "EARTH'S TREASURY" visible at the bottom of the image.

    1.91-Carat Aqua Blue Montana Sapphire (Heated)

    $4,100.00

    -

    Add to cartDone
  • A 2.17-carat aqua green-teal particolored Montana sapphire (heated) with a cushion cut is displayed on a gray textured surface. "Earth's Treasury" is printed below the gem.

    2.17-Carat Teal-Green Particolored Montana Sapphire (Heated)

    $6,500.00

    -

    Add to cartDone
  • A 1.04-carat unheated sapphire with a cushion cut and blue-violet hue is showcased on a textured metallic surface, with "EARTH'S TREASURY" displayed at the bottom.

    1.04-Carat Pinkish Purple Ceylon Sapphire (Unheated)

    $1,900.00

    -

    Add to cartDone
  • A 1.75-carat heated Montana sapphire, cushion-cut and blue in color, is displayed on a textured gray surface with the Earth's Treasury logo and text visible at the bottom.

    1.75-Carat Teal Blue Montana Sapphire (Heated)

    $2,600.00

    -

    Add to cartDone
  • The "Firenze" ring, expertly crafted in 18k yellow gold, features a 0.61-carat Montana sapphire center stone accented by two clear side stones. The ring is displayed on a rough blue-green mineral, with the "Earth's Treasury" text below.Presenting the "Firenze" ring in 18k yellow gold, showcasing a 0.61-carat Montana sapphire at its center and accented by two rectangular clear stones. Displayed elegantly atop a rough dark blue crystal, this striking piece is ready to ship.

    The “Firenze” Ring

    $4,950.00

    -

    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • The “Astrea” Ring with 1.48-Carat Cornflower Blue Ceylon Sapphire (Heated)The “Astrea” Ring with 1.48-Carat Cornflower Blue Ceylon Sapphire (Heated)

    The “Astrea” Ring

    $2,200.00

    -

    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • A 1.21-carat cushion-cut blue sapphire rests on a textured surface above the “Earth’s Treasury” logo.

    1.21-Carat Royal Blue Ceylon Sapphire (Heated)

    $2,800.00

    -

    Add to cartDone
  • A 1.74-carat Spessartine garnet with vivid orange facets sits on a textured gray surface, featuring the "Earth's Treasury" name and hexagon logo at the bottom.

    1.74-Carat Orange Spessartine Garnet

    $1,300.00

    -

    Add to cartDone
  • A 2.56-carat cushion-cut spessartine garnet with vivid red hues is shown on a gray, textured surface, featuring the text "EARTH'S TREASURY" at the bottom.

    2.56-Carat Rich Orange Spessartine Garnet

    $2,000.00

    -

    Add to cartDone
  • A 1.35-Carat Spessartine Garnet with a faceted cut and light orange hue rests on a textured gray surface, with the text "Earth's Treasury" displayed below.

    1.35-Carat Light Orange Spessartine Garnet

    $800.00

    -

    Add to cartDone
  • A 1.85-carat Spessartine garnet sits on a textured gray surface, with the "EARTH'S TREASURY" logo and text displayed beneath the gemstone.

    1.85-Carat Light Orange Spessartine Garnet

    $750.00

    -

    Add to cartDone
  • A faceted green 1.09-carat tourmaline with a square cushion cut rests on a textured gray surface; "Earth's Treasury" is printed at the bottom.

    1.09-Carat Green-Aqua Particolored Tourmaline

    $900.00

    -

    Add to cartDone
  • A 1.45-carat teal-blue tourmaline with a square cushion cut is displayed on a textured gray surface. "EARTH'S TREASURY" appears at the bottom of the image.

    1.45-Carat Deep Blue-Green Tourmaline

    $1,200.00

    -

    Add to cartDone
  • A 1.63-carat heated Montana sapphire with a cushion cut is displayed on a textured gray surface, featuring the "Earth's Treasury" logo and text at the bottom.

    1.63-Carat Medium Blue to Purple Color Change Montana Sapphire (Heated)

    $3,100.00

    -

    Add to cartDone
  • A 1.58-carat cushion-cut heated Montana sapphire with geometric facets is displayed on a textured gray surface, with the "EARTH'S TREASURY" logo and text below.

    1.58-Carat Sky Blue Montana Sapphire (Heated)

    $2,700.00

    -

    Add to cartDone
  • A 1.98-carat heated Montana sapphire with a cushion cut in teal blue is showcased on a textured light gray background, featuring the "Earth's Treasury" text below.

    1.98-Carat Teal-Blue Particolored Montana Sapphire (Heated)

    $2,950.00

    -

    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.