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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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  • Sage Amethyst 6mm Round Gemstone Beads (strand)

    Sage Amethyst 6mm Round Gemstone Beads (strand)

    $5.63
    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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  • Dakota Stones Black Dzi Agate 6mm Line Pattern - 15-Inch Bead Strand

    Dakota Stones Black Dzi Agate 6mm Line Pattern - 15-Inch Bead Strand

    Dakota Stones
    MSRP: $12.00
    $11.95
    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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    $11.95
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  • Pink Crazy Lace Agate Gemstone Beads, 6mm Round (strand) Pink Crazy Lace Agate Gemstone Beads, 6mm Round (strand)

    Pink Crazy Lace Agate Gemstone Beads, 6mm Round (strand)

    $4.69
    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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  • 6mm Round Gemstone Bead - Persian Gulf Line Agate (strand)

    6mm Round Gemstone Bead - Persian Gulf Line Agate (strand)

    $3.83
    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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  • 6mm Round Gemstone Bead - Antique Blue/ Brown Dzi Agate (strand) 6mm Round Gemstone Bead - Antique Blue/ Brown Dzi Agate (strand)

    6mm Round Gemstone Bead - Antique Blue/ Brown Dzi Agate (strand)

    $6.38
    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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    $6.38
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  • Matte Natural Agate Gemstone Beads, 6mm Round (strand)

    Matte Natural Agate Gemstone Beads, 6mm Round (strand)

    $5.40
    Natural agate beads add a warm glow to jewelry creations, from the glow of a hearth fire in winter, to the glow of a beach sunset in summer! Also known as multicolor carnelian beads, our natural agate beads offer shades ranging from deep orange to bright...
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  • Dakota Stones Blue Crazy Lace Agate 6mm Round Bead Strand

    Dakota Stones Blue Crazy Lace Agate 6mm Round Bead Strand

    Dakota Stones
    $7.67
    Put a splash of swirling blue color in your designs with the blue crazy lace agate 6mm round beads from Dakota Stones. These round beads feature vibrant blue color swirled with white and the occasional hint of green. They have a Mohs hardness of 6.5-7...
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  • Dakota Stones Blue Crazy Lace Agate 6mm Roundel Bead Strand

    Dakota Stones Blue Crazy Lace Agate 6mm Roundel Bead Strand

    Dakota Stones
    $9.05
    Accent your designs with blue color and swirling patterns using the blue crazy lace agate 6mm roundel beads from Dakota Stones. These thin, round beads feature short, almost cylindrical shapes perfect for using as spacers. Each bead features vivid blue...
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    $9.05
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  • Dakota Stones Druzy Agate Blue-Green 6mm Round Bead Strand

    Dakota Stones Druzy Agate Blue-Green 6mm Round Bead Strand

    Dakota Stones
    $12.95
    Decorate your designs with the magical look of these druzy agate beads. These gemstone beads from Dakota Stones 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...
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  • Dakota Stones Moss Agate 6mm Faceted Round Bead Strand

    Dakota Stones Moss Agate 6mm Faceted Round Bead Strand

    Dakota Stones
    $14.95
    Add lush accents to jewelry designs with these Dakota Stones beads. Available by the strand, these round gemstone beads feature facets cut into the surface for fun dimension and added shine. These beads feature a versatile size that can be used in...
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  • Dakota Stones Rainbow Druzy Agate 6mm Round Bead Strand

    Dakota Stones Rainbow Druzy Agate 6mm Round Bead Strand

    Dakota Stones
    $12.95
    Colorful style can be yours 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 druzy...
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  • Dakota Stones Terra Agate Red 6mm Round - 15-Inch Bead Strand

    Dakota Stones Terra Agate Red 6mm Round - 15-Inch Bead Strand

    Dakota Stones
    MSRP: $10.00
    $9.95
    A fiery blend of earthly color fills these red terra agate beads from Dakota Stones. These beads feature a mix of reds and browns across a backdrop of whites and greys, creating a beautiful display. Terra agate is a form of chalcedony made of quartz...
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    MSRP: $10.00
    $9.95
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