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Tejas Beads is your trusted source for natural gemstone beads, pearls, and jewelry-making supplies. Expect great customer service, top quality stones, and prompt shipping from our USA based shop.

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12mm Gemstone Beads

12mm gemstone beads are a popular choice for large bead jewelry designs. Generally these beads are used by those with large wrists or in necklaces that are intended to make a statement. If you're trying to visualize this size, most dice are about 12mm wide. The great thing about these larger beads is that they show the beauty of the raw stone material and give your designs good weight when strung together. These are often combined with 8mm and 10mm beads to make stacked bracelets.

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  • Beads - Full Catalog
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  • Smooth teardrop petrified wood beads in earth tones from reddish brown to ivory

    Petrified Wood · Smooth · Teardrop · 10mm, 12mm

    $14.95

    Petrified Wood · Smooth · Teardrop · 10mm, 12mm

    $14.95

  • Polished Seraphinite Beads For Jewelry Making. Natural Smooth Round Seraphinite Beads.

    Russian Seraphinite AAA · Smooth · Round · 10mm, 11mm, 12mm

    $156.95

    Russian Seraphinite AAA · Smooth · Round · 10mm, 11mm, 12mm

    $156.95

  • Smooth freeform chip watermelon tourmaline beads, multicolor

    Watermelon Tourmaline · Smooth · Freeform Chips · 10mm, 12mm

    $9.95

    Watermelon Tourmaline · Smooth · Freeform Chips · 10mm, 12mm

    $9.95

  • Smooth rectangle tiger eye beads, golden brown with a silky shimmer

    Tiger Eye · Smooth · Rectangle · 12mm, 13mm, 15mm

    $12.95

    Tiger Eye · Smooth · Rectangle · 12mm, 13mm, 15mm

    $12.95

  • Matte tube Nasa Tribal Krobo painted glass beads with blue zig-zag and white dots

    Nasa Tribal Krobo Painted Glass · Matte · Tube · 12mm

    $18.95

    Nasa Tribal Krobo Painted Glass · Matte · Tube · 12mm

    $18.95

  • Polished Tiger Eye Beads. Round loose beads.

    Tigers Eye · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm, 14mm

    $5.50

    Tigers Eye · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm, 14mm

    $5.50

  • A close-up pile of small, round, off-white ceramic beads or balls filling the frame.

    Fossil Jasper · Matte · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $3.95

    Fossil Jasper · Matte · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $3.95

  • Chevron Amethyst Beads

    Chevron Amethyst · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm, 16mm

    $6.50

    Chevron Amethyst · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm, 16mm

    $6.50

  • Black onyx round loose beads.

    Black Onyx · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $4.50

    Black Onyx · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $4.50

  • Smooth round blue apatite beads, translucent to opaque blue

    Blue Apatite A · Smooth · Round · 6mm, 8mm, 10mm, 12mm, 14mm

    $15.95

    Blue Apatite A · Smooth · Round · 6mm, 8mm, 10mm, 12mm, 14mm

    $15.95

  • Fluorite flower shape beads.

    Rainbow Fluorite · Carved · Flower · 10mm, 12mm

    $32.95

    Rainbow Fluorite · Carved · Flower · 10mm, 12mm

    $32.95

  • Close-up of blue and white marbled stones

    Blue Lace Agate · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm, 14mm

    $7.95

    Blue Lace Agate · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm, 14mm

    $7.95

  • Winter blossom agate beads.

    Winter Blossom Agate · Smooth · Round · 6mm, 8mm, 10mm, 12mm

    $10.95

    Winter Blossom Agate · Smooth · Round · 6mm, 8mm, 10mm, 12mm

    $10.95

  • Beadalon gold color lobster clasps, each with two rings

    Beadalon Lobster Clasp w/ 2 Rings · Gold Color · 12mm · 4pc

    $7.50

    Beadalon Lobster Clasp w/ 2 Rings · Gold Color · 12mm · 4pc

    $7.50

  • Natural Clear Quartz Beads For Jewelry Making

    Clear Quartz A · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm

    $7.95

    Clear Quartz A · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm

    $7.95

  • A dense pile of small, smooth, glossy round beads in a warm cream or light tan color, filling the entire frame.

    Fossil Jasper · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $3.95

    Fossil Jasper · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $3.95

  • Smooth oval tiger eye beads, polished golden brown with a silky shimmer

    Tiger Eye · Smooth · Oval · 12mm, 13mm

    $12.95

    Tiger Eye · Smooth · Oval · 12mm, 13mm

    $12.95

  • Smooth heishi triangle Canadian green jade beads in celadon to emerald green

    Canadian Green Jade · Smooth · Heishi Triangle · 11mm to 12mm

    $20.95

    Canadian Green Jade · Smooth · Heishi Triangle · 11mm to 12mm

    $20.95

  • Creamy color peach moonstone beads.

    Peach Moonstone A · Smooth · Round · 8mm, 10mm, 12mm

    $11.95

    Peach Moonstone A · Smooth · Round · 8mm, 10mm, 12mm

    $11.95

  • Selenite Beads

    Selenite · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $6.95

    Selenite · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $6.95

  • Matte faceted round black onyx beads with a frosted finish over crisp facets

    Black Onyx · Matte Faceted · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $5.95

    Black Onyx · Matte Faceted · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $5.95

  • Detailed view of polished stone beads showing natural banding and texture in beige, caramel, and brown colors.

    Petrified Wood · Smooth · Square Tile · 12mm

    $14.95

    Petrified Wood · Smooth · Square Tile · 12mm

    $14.95

  • Close-up of translucent white beads

    Rainbow Moonstone A · Smooth · Round · 6mm, 8mm

    $17.95

    Rainbow Moonstone A · Smooth · Round · 6mm, 8mm

    $17.95

  • Smooth round Madagascar rose quartz beads, pale blush to deeper rose pink

    Madagascar Rose Quartz · Smooth · Round · 6mm, 8mm, 9mm, 10mm, 12mm

    $8.95

    Madagascar Rose Quartz · Smooth · Round · 6mm, 8mm, 9mm, 10mm, 12mm

    $8.95

  • Matte graduated thin coin Roman glass beads made in Afghanistan

    Roman Glass · Matte · Coin · Graduated 12mm to 20mm

    $16.95

    Roman Glass · Matte · Coin · Graduated 12mm to 20mm

    $16.95

  • Smooth coin cloudy quartz beads, milky with wispy grey inclusions

    Cloudy Quartz · Smooth · Coin · 12mm

    $13.95

    Cloudy Quartz · Smooth · Coin · 12mm

    $13.95

  • Colorful painted stones with various patterns on a dark surface

    Karaga Medley Krobo Fused Glass · Matte · Freeform Round · 12mm

    $18.95

    Karaga Medley Krobo Fused Glass · Matte · Freeform Round · 12mm

    $18.95

  • Smooth oval hypersthene beads in grayish black with a metallic-like sheen

    Hypersthene · Smooth · Oval · 10mm, 12mm

    $29.95

    Hypersthene · Smooth · Oval · 10mm, 12mm

    $29.95

  • Angelite rectangle shape beads.
    Save 54%

    Angelite · Smooth · Rectangle · 8mm, 10mm, 12mm, 14mm **CLEARANCE**

    $5.95  12.95

    Angelite · Smooth · Rectangle · 8mm, 10mm, 12mm, 14mm **CLEARANCE**

    $5.95  12.95
  • Brushed heart silver jewelry findings.

    Brushed Heart · Antique Silver Plated Finding · 12mm · 15pcs

    $4.95

    Brushed Heart · Antique Silver Plated Finding · 12mm · 15pcs

    $4.95

  • Golden Obsidian Beads.

    Golden Obsidian · Matte · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $5.95

    Golden Obsidian · Matte · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $5.95

  • Natural pink thulite beads speckled with deep pink

    Thulite · Smooth · Round · 8mm, 12mm

    $23.95

    Thulite · Smooth · Round · 8mm, 12mm

    $23.95

  • Smooth oval bronzite beads, metallic brown with a bronze-like luster

    Bronzite · Smooth · Oval · 8mm, 10mm, 12mm, 13mm

    $12.95

    Bronzite · Smooth · Oval · 8mm, 10mm, 12mm, 13mm

    $12.95

  • Golden Sheen Obsidian Round Loose Beads

    Golden Obsidian · Round · Smooth · 4mm, 6mm, 8mm, 10mm, 12mm

    $4.95

    Golden Obsidian · Round · Smooth · 4mm, 6mm, 8mm, 10mm, 12mm

    $4.95

  • Smooth oval green zebra jasper beads, deep green with bold dark banding

    Green Zebra Jasper · Smooth · Oval · 10mm, 12mm

    $13.95

    Green Zebra Jasper · Smooth · Oval · 10mm, 12mm

    $13.95

  • Close-up of raw labradorite beads on a dark surface

    Labradorite · Rough Raw · Nugget · 10mm, 12mm

    $12.95

    Labradorite · Rough Raw · Nugget · 10mm, 12mm

    $12.95

  • Close-up of a pile of dark gray and black spherical objects

    Silver Obsidian · Matte · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $4.95

    Silver Obsidian · Matte · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $4.95

  • Smooth oval petrified wood beads in reddish brown to ivory earth tones

    Petrified Wood · Smooth · Oval · 8mm, 10mm, 12mm, 13mm, 18mm

    $13.95

    Petrified Wood · Smooth · Oval · 8mm, 10mm, 12mm, 13mm, 18mm

    $13.95

  • Blue calcite beads.

    Aquatine Lemurian Blue Calcite · Smooth · Round · 2mm, 6mm, 8mm, 10mm, 12mm

    $5.95

    Aquatine Lemurian Blue Calcite · Smooth · Round · 2mm, 6mm, 8mm, 10mm, 12mm

    $5.95

  • Smooth round phlogopite biotite mica beads, golden to brown with a pearly luster

    Phlogopite Biotite Mica · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $5.95

    Phlogopite Biotite Mica · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $5.95

  • Beadalon silver plated lobster clasps, each with two rings
    Sold out

    Beadalon Lobster Clasp w/ 2 Rings · Silver Plated · 12mm · 4pc

    $7.95

    Beadalon Lobster Clasp w/ 2 Rings · Silver Plated · 12mm · 4pc

    $7.95

  • Close-up of purple beads on a dark background

    Amethyst · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $6.95

    Amethyst · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $6.95

  • Rough raw freeform nugget tektite beads, glassy meteorite impact mineraloid

    Tektite · Rough Raw · Freeform Nuggets · 12mm, 14mm, 18mm

    $16.95

    Tektite · Rough Raw · Freeform Nuggets · 12mm, 14mm, 18mm

    $16.95

  • Smooth round porcelain jasper beads in soft purple and pink tones

    Porcelain Jasper · Smooth · Round · 6mm, 8mm, 10mm

    $12.95

    Porcelain Jasper · Smooth · Round · 6mm, 8mm, 10mm

    $12.95

  • Silver Wings Jewelry Findings.

    Tiny Wings · Antique Silver Plated Finding · 12mm · 150pcs

    $4.95

    Tiny Wings · Antique Silver Plated Finding · 12mm · 150pcs

    $4.95

  • Brown chunky beads on a string.

    Baltic Amber · Rough Raw · Freeform · 12mm, 14mm, 18mm

    $18.95

    Baltic Amber · Rough Raw · Freeform · 12mm, 14mm, 18mm

    $18.95

  • Close-up of multicolored beads with pink strings, likely used as decorative elements.

    Ametrine A · Smooth · Round · 10mm, 12mm

    $69.95

    Ametrine A · Smooth · Round · 10mm, 12mm

    $69.95

  • Teardrop-shaped white beads on a dark surface

    Tourmalated Rainbow Moonstone · Smooth · Center Drill Teardrop · 9mm, 10mm, 11mm, 12mm

    $28.95

    Tourmalated Rainbow Moonstone · Smooth · Center Drill Teardrop · 9mm, 10mm, 11mm, 12mm

    $28.95

  • Australian Boulder Opal Beads.

    Australian Boulder Opal · Smooth · Round · 7mm, 8mm, 9mm, 10mm 12mm

    $50.95

    Australian Boulder Opal · Smooth · Round · 7mm, 8mm, 9mm, 10mm 12mm

    $50.95

  • Close-up of black beads on a gray background

    Black Obsidian · Matte · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $4.50

    Black Obsidian · Matte · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $4.50

  • Red, grey, and white laguna lace agate beads.

    Laguna Lace Agate A · Smooth · Round · 6mm, 8mm, 10mm, 12mm

    $9.95

    Laguna Lace Agate A · Smooth · Round · 6mm, 8mm, 10mm, 12mm

    $9.95

  • Gift card for beads, findings and beading supplies, sent by email

    Gift Cards

    Sometimes it's best to let them choose!

    Shop Gift Cards
  • Smooth chip stick watermelon tourmaline beads in green and pink

    Watermelon Tourmaline · Smooth · Chips Sticks · 8mm to 12mm

    $9.95

    Watermelon Tourmaline · Smooth · Chips Sticks · 8mm to 12mm

    $9.95

  • Smooth oval cloudy quartz beads, milky quartz with wispy grey inclusions

    Cloudy Quartz · Smooth · Oval · 10mm, 12mm

    $13.95

    Cloudy Quartz · Smooth · Oval · 10mm, 12mm

    $13.95

  • Close-up of black and white patterned beads on a dark background

    African Batik Bones · Smooth · Irregular Short Cylinder · 10mm to 12mm

    $13.95

    African Batik Bones · Smooth · Irregular Short Cylinder · 10mm to 12mm

    $13.95

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