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Agate

No gemstone is more creatively striped by nature than agate. This distinct and dramatically banded variety of chalcedony is composed of quartz layers. This composition varies greatly and can be of many colors. The other chalcedony family, jasper, has less-regular patterns and is less defined than the agates. Another difference between the two is that agates tend to be translucent (or at least contain translucent bands), while jaspers are generally opaque. This distinction stems from agate being composed of microscopic "fibers" of crystalline quartz while jasper is made of microscopic "grains" of crystalline quartz. Each individual agate forms by filling a cavity in a host rock. As a result, agate is often found as a round nodule with concentric bands like the rings of a tree trunk.

In ancient times, agate was highly valued as a talisman or amulet. It was said to quench thirst and protect from fever. Persian magicians used agate to divert storms. Some believed that agate would render the wearer invisible, and due to its strength and durability, it is used for making ornaments or for astrological purposes. Agate is a cooling stone and is said to cure insomnia, protect against danger, promote strength and healing, and ensure a healthy life. The major sources of agate are Australia, Canada, Mexico and the U.S.A. The gemstones of Maryland (Patuxent River Stone), Minnesota (Lake Superior agate) and South Dakota (Fairburn agate) are all agates. Find out about individual types of agate in our Gemstone Index.


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  • Dakota Stones Terra Agate 10mm Round - 15-Inch Bead Strand

    Dakota Stones Terra Agate 10mm Round - 15-Inch Bead Strand

    Dakota Stones
    MSRP: $15.00
    $14.95
    A beautiful blend of earthly color fills these terra agate beads from Dakota Stones. These beads feature a mix of greenish-blue and brown, creating patterns like miniature Earths with the brown spaces like continents in the vast ocean. Terra agate is a...
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    MSRP: $15.00
    $14.95
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  • Sage Amethyst 10mm Round Gemstone Beads (strand)

    Sage Amethyst 10mm Round Gemstone Beads (strand)

    $10.50
    Amethyst Sage Agate (sometimes called Sage Amethyst) is a dendritic agate with a base of lilac purple, cream, white, tan or dusty sage green, with dark dendrites (branching patterns like tree branches or river deltas) and black manganese veining. Some...
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    $10.50
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  • Dakota Stones Crazy Lace Agate 10mm Faceted Round Bead

    Dakota Stones Crazy Lace Agate 10mm Faceted Round Bead

    Dakota Stones
    $17.75
    Create an earthy beauty in your jewelry with these Dakota Stones crazy lace agate beads. Available by the strand, these gemstone beads display a round shape and facets cut into the surface to give each bead extra shine. They are bold in size, so you can...
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    $17.75
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  • 10mm Round Gemstone Bead - Antique Blue Brown Dzi Agate (strand) 10mm Round Gemstone Bead - Antique Blue Brown Dzi Agate (strand)

    10mm Round Gemstone Bead - Antique Blue Brown Dzi Agate (strand)

    $9.78
    Agate: No gemstone is more creatively striped by nature than agate. This distinct and dramatically banded variety of chalcedony is composed of quartz layers. This composition varies greatly and can be of many colors. The other chalcedony family, jasper,...
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    $9.78
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  • 10mm Round Gemstone Bead - Azure Agate (strand) 10mm Round Gemstone Bead - Azure Agate (strand)

    10mm Round Gemstone Bead - Azure Agate (strand)

    $7.23
    Azure Agate: Our azure agate beads are darker blue than many azure agate beads on the market. They are a vivid mix of indigo, cobalt blue, white, black, translucent gray and occasionally some red-browns. Some of the beads have dark blue or black spots...
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    $7.23
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  • 10mm Round Gemstone Bead - Blue/ White Porcelain Agate (strand)

    10mm Round Gemstone Bead - Blue/ White Porcelain Agate (strand)

    $7.23
    See the Related Products links below for similar items, and more information about this stone.
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  • 10mm Round Gemstone Bead - Persian Gulf Line Agate (strand)

    10mm Round Gemstone Bead - Persian Gulf Line Agate (strand)

    $7.23
    Persian Gulf Line Agate beads have all the favorite features of agate: Lovely layered stripes and swirls of mostly-translucent oranges, reds, browns, grays, peach, cream and white. These semiprecious banded agate beads are cut from a variety of...
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    $7.23
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  • Dakota Stones Black Dzi Agate 10mm Line Pattern - 15-Inch Bead Strand

    Dakota Stones Black Dzi Agate 10mm Line Pattern - 15-Inch Bead Strand

    Dakota Stones
    MSRP: $16.00
    $15.95
    Showcase style with ancient meaning using these Dakota Stones beads. These beads are made to resemble beads first found in Ancient India. The full details of their use in ancient times are unknown, although they were often passed down as prized...
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    MSRP: $16.00
    $15.95
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  • Dakota Stones Botswana Agate 7 x 10mm Table Cut Cube 15-16" Bead Strand Dakota Stones Botswana Agate 7 x 10mm Table Cut Cube 15-16" Bead Strand

    Dakota Stones Botswana Agate 7 x 10mm Table Cut Cube 15-16" Bead Strand

    Dakota Stones
    $44.85
    Bring gemstone style to your designs with these Dakota Stones 7 x 10mm table cut cube beads. These beads feature a cube shape with table facets. Botswana Agate was formed nearly 187 million years ago by lava flowing in waves from long faults in the earth...
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    $44.85
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  • Dakota Stones Moss Agate 10mm Faceted Round Bead Strand

    Dakota Stones Moss Agate 10mm Faceted Round Bead Strand

    Dakota Stones
    $20.45
    Rich earthy beauty fills these Dakota Stones beads. Available by the strand, these gemstone beads display a round shape and facets cut into the surface to give them extra shine. These beads feature deep moss green and gray tones that you'll love...
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    $20.45
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  • Dakota Stones Rainbow Druzy Agate 10mm Round Bead Strand

    Dakota Stones Rainbow Druzy Agate 10mm Round Bead Strand

    Dakota Stones
    $19.45
    Bring fascinating color to designs with these Dakota Stones gemstone beads. These beads feature a classic round shape that will work in a variety of designs. The surface of each bead is smooth, but some feature open crevices that reveal the sparkling...
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    $19.45
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  • Pink Crazy Lace Agate Gemstone Beads, 10mm Round (strand) Pink Crazy Lace Agate Gemstone Beads, 10mm Round (strand)

    Pink Crazy Lace Agate Gemstone Beads, 10mm Round (strand)

    $5.33
    No gemstone is more creatively striped by nature than agate. This distinct and dramatically banded variety of chalcedony is composed of quartz layers. Crazy Lace Agate offers some of the most intricate mineral patterns offered by Mother Nature. Keep in...
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    $5.33
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