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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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  • Antique copper finish fourteen dot metal findings

    Fourteen Dot · Antique Copper · 9x12mm

    $7.95

    Fourteen Dot · Antique Copper · 9x12mm

    $7.95

  • 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

  • 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 brown pebbles

    Bronzite · Smooth · Marquise Oval · 10mm, 12mm

    $12.95

    Bronzite · Smooth · Marquise Oval · 10mm, 12mm

    $12.95

  • Close-up of pink beads with a soft focus

    Madagascar Rose Quartz · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $8.95

    Madagascar Rose Quartz · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $8.95

  • 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

  • Blue Kyanite Oval Shape Beads.

    Blue Kyanite A · Smooth · Oval · 8mm, 12mm, 15mm

    $29.95

    Blue Kyanite A · Smooth · Oval · 8mm, 12mm, 15mm

    $29.95

  • 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

  • Dark purple chevron amethyst beads.

    Chevron Amethyst · Smooth · Round · 6mm, 8mm, 10mm, 12mm, 14mm, 16mm

    $7.95

    Chevron Amethyst · Smooth · Round · 6mm, 8mm, 10mm, 12mm, 14mm, 16mm

    $7.95

  • Faceted double terminated Herkimer diamond quartz beads, water clear to heavily included
    Sold out

    Herkimer Diamond Quartz · Faceted · Double Point Terminated · 8mm, 10mm, 12mm

    $28.95

    Herkimer Diamond Quartz · Faceted · Double Point Terminated · 8mm, 10mm, 12mm

    $28.95

  • 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

  • Smooth split geode Oco agate beads, hollow centers lined with tiny quartz crystals

    Oco Agate · Smooth · Split Geode · Graduated 12mm to 24mm

    $40.95

    Oco Agate · Smooth · Split Geode · Graduated 12mm to 24mm

    $40.95

  • Smooth round multicolor moonstone beads in peach, cream, gray and warm neutrals

    Multicolor Moonstone · Smooth · Round · 6mm, 8mm, 10mm, 12mm

    $7.95

    Multicolor Moonstone · Smooth · Round · 6mm, 8mm, 10mm, 12mm

    $7.95

  • 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 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

  • A close-up pile of round stone beads in assorted earthy colors, including brown, beige, cream, gray, and muted red, with some beads showing natural marbling and swirl patterns.

    Petrified Wood · Matte · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $5.95

    Petrified Wood · Matte · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $5.95

  • Green garnet beads.

    Green Garnet · Smooth · Sticks · Graduated 10mm to 12mm

    $9.95

    Green Garnet · Smooth · Sticks · Graduated 10mm to 12mm

    $9.95

  • Close-up of blue and green marbled beads

    Azurite Malachite A+ · Smooth · Round · 6mm, 8mm, 10mm, 12mm

    $19.95

    Azurite Malachite A+ · Smooth · Round · 6mm, 8mm, 10mm, 12mm

    $19.95

  • 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

  • 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 round green moss agate beads, translucent with green moss patterns

    Green Moss Agate · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $4.95

    Green Moss Agate · Smooth · Round · 4mm, 6mm, 8mm, 10mm, 12mm

    $4.95

  • Malachite Beads.

    Malachite · Smooth · Sticks · Graduated 12mm to 20mm

    $11.95

    Malachite · Smooth · Sticks · Graduated 12mm to 20mm

    $11.95

  • 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

  • Cedar Wood Beads

    Cedar Wood · Matte · Round · 6mm, 8mm, 10mm, 12mm

    $5.50

    Cedar Wood · Matte · Round · 6mm, 8mm, 10mm, 12mm

    $5.50

  • 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

  • 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 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

  • 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

  • Metallic grey shungite beads

    Petrovsky Shungite · Smooth · Round · 6mm, 8mm, 10mm, 12mm

    $18.95

    Petrovsky Shungite · Smooth · Round · 6mm, 8mm, 10mm, 12mm

    $18.95

  • Cloudy Quartz Beads.

    Cloudy Quartz · Smooth · Coin · 10mm, 12mm, 15mm, 16mm

    $11.95

    Cloudy Quartz · Smooth · Coin · 10mm, 12mm, 15mm, 16mm

    $11.95

  • Close-up of blue cylindrical beads on a gray background
    Sold out

    Lapis Lazuli · Smooth · Barrel Tube · 5x12mm **CLEARANCE**

    $7.95  9.95

    Lapis Lazuli · Smooth · Barrel Tube · 5x12mm **CLEARANCE**

    $7.95  9.95
  • 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 natural stone round beads in warm earth tones with smooth glossy finish.

    Petrified Wood · Smooth · Coin · 12mm, 14mm

    $14.95

    Petrified Wood · Smooth · Coin · 12mm, 14mm

    $14.95

  • 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

  • Silver Wings Jewelry Findings.

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

    $4.95

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

    $4.95

  • 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

  • Close-up of blue teardrop-shaped tiles on a grid pattern

    Blue Kyanite A · Smooth · Teardrop · 12mm, 15mm

    $75.95

    Blue Kyanite A · Smooth · Teardrop · 12mm, 15mm

    $75.95

  • Smooth round silver obsidian beads, deep black with a silvery sheen

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

    $4.95

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

    $4.95

  • Fluorite flower shape beads.

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

    $32.95

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

    $32.95

  • 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

  • Faceted round fossil jasper beads, also called riverstone

    Fossil Jasper · Faceted · Round · 8mm, 10mm, 12mm

    $8.95

    Fossil Jasper · Faceted · Round · 8mm, 10mm, 12mm

    $8.95

  • 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

  • Dyed smooth coconut shell disk beads in earthy brown

    Coconut Shell · Smooth · Disk · 6mm, 8mm, 10mm, 12mm

    $7.95

    Coconut Shell · Smooth · Disk · 6mm, 8mm, 10mm, 12mm

    $7.95

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

    Hypersthene · Smooth · Oval · 12mm, 13mm, 15mm

    $30.95

    Hypersthene · Smooth · Oval · 12mm, 13mm, 15mm

    $30.95

  • 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

  • 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

  • Rough raw citrine nugget beads in transparent yellow-orange, unpolished

    Citrine · Rough Raw · Nugget · 8mm, 10mm, 12mm

    $9.95

    Citrine · Rough Raw · Nugget · 8mm, 10mm, 12mm

    $9.95

  • 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

  • Smooth triangle heishi chevron amethyst beads, violet, lavender, cream and tan with V-shaped banding

    Chevron Amethyst · Smooth · Triangle Heishi · 12mm

    $17.95

    Chevron Amethyst · Smooth · Triangle Heishi · 12mm

    $17.95

  • 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 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

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

    Gift Cards

    Sometimes it's best to let them choose!

    Shop Gift Cards
  • Black tourmaline stick beads.

    Black Tourmaline · Smooth · Sticks · 10mm to 12mm

    $10.95

    Black Tourmaline · Smooth · Sticks · 10mm to 12mm

    $10.95

  • Close-up of beige beads on a dark background

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

    $13.95

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

    $13.95

  • Kyanite Stick Shape Beads.

    Blue Kyanite · Smooth · Sticks · Graduated 12mm to 22mm

    $12.95

    Blue Kyanite · Smooth · Sticks · Graduated 12mm to 22mm

    $12.95

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