Agate Gemstone Beads
Agate gemstones beads form from microscopic silica crystals. These conditions create the signature banded patterns that vary in color, opacity and translucence. This formation process makes Agate gemstones unique and distinct. Agates rank high in hardness which makes them popular in jewelry designs.
Facts: Agate gemstones have been popular throughout history. Dating far back to ancient civilizations who admired the fascinating patterns. Dakota Stones carries a large variety of Agate beads in different colors, patterns and cuts, sourced globally.
Metaphysical / Holistic: Agates are believed to promote inner stability, composure, and maturity. Their warm, protective properties encourage security and self-confidence, making these beads ideal for designers who appreciate both the visual and spiritual qualities of their materials.
DZI Agate 8mm Round Black Line Pattern 15-16 Inch
Original price
$14.00
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Original price
$14.00
Original price
$14.00
$14.00
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$14.00
These Dakota Stones "DZI" style agate beads are made to resemble beads first found in India between 1000 and 2000 BCE. These reproductions are desi...
View full details
Original price
$14.00
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$14.00
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$14.00
$14.00
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$14.00
DZI Agate 6mm Round Black Line Pattern - 15-16 Inch
Original price
$13.00
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$13.00
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$13.00
$13.00
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$13.00
These Dakota Stones "DZI" style agate beads are made to resemble beads first found in India between 1000 and 2000 BCE. These reproductions are desi...
View full details
Original price
$13.00
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Original price
$13.00
Original price
$13.00
$13.00
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$13.00
DZI Agate 10mm Round Black Line Pattern - 15-16 Inch
Original price
$15.00
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$15.00
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$15.00
$15.00
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$15.00
These Dakota Stones "DZI" style agate beads are made to resemble beads first found in India between 1000 and 2000 BCE. These reproductions are desi...
View full details
Original price
$15.00
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Original price
$15.00
Original price
$15.00
$15.00
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$15.00
Ancient Cellar Black Agate 10mm Round - 15-16 Inch
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$12.00
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$12.00
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$12.00
$12.00
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$12.00
Ancient Cellar Black Agate is a natural agate that is dyed and heated to give it the unique color and pattern we call Ancient Cellar.
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$12.00
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$12.00
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$12.00
$12.00
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$12.00
Blue Black Porcelain Agate 8mm Round - 15-16 inch
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$11.00
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$11.00
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$11.00
$11.00
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$11.00
Porcelain Agate is a natural agate that is dyed and heated to give it the unique blue/black color and pattern that resembles porcelain.
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$11.00
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$11.00
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$11.00
$11.00
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$11.00
Blue Black Porcelain Agate 10mm Round - 15-16 inch
Original price
$14.00
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$14.00
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$14.00
$14.00
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$14.00
Porcelain Agate is a natural agate that is dyed and heated to give it the unique blue/black color and pattern that resembles porcelain.
Original price
$14.00
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$14.00
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$14.00
$14.00
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$14.00
DZI Agate 10mm Round Watermelon Black/White - 15-16 Inch
Original price
$16.00
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$16.00
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$16.00
$16.00
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$16.00
These Dakota Stones "DZI" style agate beads are made to resemble beads first found in India between 1000 and 2000 BCE. These reproductions are desi...
View full details
Original price
$16.00
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$16.00
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$16.00
$16.00
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$16.00
Black Eye Agate 8mm Round 15-16 Inch
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$17.00
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$17.00
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$17.00
$17.00
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$17.00
Black Eye Agate is a variety of Sardonyx which has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is n...
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Original price
$17.00
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$17.00
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$17.00
$17.00
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$17.00
DZI Agate 8mm Round Watermelon Black/White - 15-16 Inch
Original price
$14.00
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Original price
$14.00
Original price
$14.00
$14.00
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$14.00
These Dakota Stones "DZI" style agate beads are made to resemble beads first found in India between 1000 and 2000 BCE. These reproductions are desi...
View full details
Original price
$14.00
-
Original price
$14.00
Original price
$14.00
$14.00
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$14.00
DZI Agate 6mm Round Watermelon Black/White - 15-16 Inch
Original price
$13.00
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Original price
$13.00
Original price
$13.00
$13.00
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$13.00
These Dakota Stones "DZI" style agate beads are made to resemble beads first found in India between 1000 and 2000 BCE. These reproductions are desi...
View full details
Original price
$13.00
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Original price
$13.00
Original price
$13.00
$13.00
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$13.00
Black Eye Agate 6mm Round 15-16 Inch
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$14.00
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$14.00
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$14.00
$14.00
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$14.00
Black Eye Agate is a variety of Sardonyx which has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is n...
View full details
Original price
$14.00
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$14.00
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$14.00
$14.00
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$14.00
Blue Black Porcelain Agate 10mm Matte Round - 15-16 inch
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$12.00
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$12.00
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$12.00
$12.00
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$12.00
Porcelain Agate is a natural agate that is dyed and heated to give it the unique blue/black color and pattern that resembles porcelain.
Original price
$12.00
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$12.00
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$12.00
$12.00
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$12.00
Black Eye Agate 10mm Round 15-16 Inch
Original price
$19.00
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$19.00
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$19.00
$19.00
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$19.00
Black Eye Agate is a variety of Sardonyx which has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is n...
View full details
Original price
$19.00
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Original price
$19.00
Original price
$19.00
$19.00
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$19.00
Blue Black Porcelain Agate 12mm Matte Round - 15-16 inch
Original price
$16.00
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Original price
$16.00
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$16.00
$16.00
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$16.00
Porcelain Agate is a natural agate that is dyed and heated to give it the unique blue/black color and pattern that resembles porcelain.
Original price
$16.00
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Original price
$16.00
Original price
$16.00
$16.00
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$16.00
Ancient Cellar Black Agate 12mm Round - 15-16 Inch
Original price
$16.00
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$16.00
Original price
$16.00
$16.00
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$16.00
Ancient Cellar Black Agate is a natural agate that is dyed and heated to give it the unique color and pattern we call Ancient Cellar.
Original price
$16.00
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Original price
$16.00
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$16.00
$16.00
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$16.00
Ancient Cellar Black Agate 12mm Matte Round - 15-16 Inch
Regular Price
$16.00
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$16.00
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$16.00
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$16.00
$6.40
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$6.40
Ancient Cellar Black Agate is a natural agate that is dyed and heated to give it the unique color and pattern we call Ancient Cellar.
Regular Price
$16.00
Original price
$16.00
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Original price
$16.00
Original price
$16.00
$6.40
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$6.40
Sale
Blue Black Porcelain Agate 12mm Round - 15-16 inch
Original price
$16.00
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Original price
$16.00
Original price
$16.00
$16.00
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$16.00
Porcelain Agate is a natural agate that is dyed and heated to give it the unique blue/black color and pattern that resembles porcelain.
Original price
$16.00
-
Original price
$16.00
Original price
$16.00
$16.00
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$16.00
Black Eye Agate 4mm Round - 15-16 Inch
Original price
$13.00
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Original price
$13.00
Original price
$13.00
$13.00
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$13.00
Black Eye Agate is a variety of Sardonyx which has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is n...
View full details
Original price
$13.00
-
Original price
$13.00
Original price
$13.00
$13.00
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$13.00
DZI Agate 8x12mm Barrel Black Eye - 15-16 Inch
Original price
$20.00
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Original price
$20.00
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$20.00
$20.00
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$20.00
“DZI” Agate is made to resemble beads first found in India between 1000 and 2000 BCE. These reproductions are designed in the traditional color, pa...
View full details
Original price
$20.00
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Original price
$20.00
Original price
$20.00
$20.00
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$20.00
DZI Agate 10x14mm Rondelle Black Line - 12-14 Inch - CLEARANCE
Original price
$24.00
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Original price
$24.00
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$24.00
$24.00
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$24.00
“DZI” Agate is made to resemble beads first found in India between 1000 and 2000 BCE. These reproductions are designed in the traditional color, pa...
View full details
Original price
$24.00
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Original price
$24.00
Original price
$24.00
$24.00
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$24.00
DZI Agate 10x14mm Barrel Black Line - 14-15 Inch
Original price
$20.00
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Original price
$20.00
Original price
$20.00
$20.00
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$20.00
“DZI” Agate is made to resemble beads first found in India between 1000 and 2000 BCE. These reproductions are designed in the traditional color, pa...
View full details
Original price
$20.00
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Original price
$20.00
Original price
$20.00
$20.00
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$20.00
DZI Agate 10x25mm Barrel Black Tiger Teeth - 15-16 Inch
Original price
$22.00
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Original price
$22.00
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$22.00
$22.00
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$22.00
“DZI” Agate is made to resemble beads first found in India between 1000 and 2000 BCE. These reproductions are designed in the traditional color, pa...
View full details
Original price
$22.00
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Original price
$22.00
Original price
$22.00
$22.00
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$22.00
Black Agate 4mm Faceted Bicone - 15-16 Inch
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$17.00
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$17.00
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$17.00
$17.00
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$17.00
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$17.00
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$17.00
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$17.00
$17.00
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$17.00
About this stone
Color
CreamGrayBrownTanRedYellowMulti
Origin
BotswanaMexicoMadagascarIndiaBrazilMoroccoRussiaUSA
Mohs hardness
6.5–7
Treatment categories
NaturalDyedEtched
Industry-standard treatment
Most banded agates sold natural; DZI universally dyed and etched; druzy frequently dyed; bright candy-color agates indicate dye
Mineral chemistry
Microcrystalline quartz (chalcedony) deposited in rhythmic crystalline bands in volcanic gas pockets
Crystal system
Trigonal
Stone family
Chalcedony
Common cuts
RoundRondelleFaceted RondelleSmoothNugget
Common sizes
4mm6mm8mm10mm12mm
Care notes
Durable (Mohs 6.5–7). Suitable for any jewelry application. Mild soap and soft cloth; avoid ultrasonics on dyed material.
Related stones
Jasper, Chalcedony, Onyx
Frequently asked questions
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What's the difference between agate and jasper?
Both are microcrystalline quartz (chalcedony). The diagnostic difference is translucence and banding: agate is typically translucent to semi-translucent with rhythmic crystalline bands, formed in cavities where silica-rich solutions deposited layer by layer. Jasper is opaque, colored by mineral inclusions (iron, manganese, organic matter), and typically lacks the rhythmic banding. The Mohs hardness (6.5–7), care profile, and underlying chemistry are essentially the same; the visual register is the buying decision. -
Is moss agate real agate?
Mineralogically, moss agate is dendritic chalcedony — it shares agate's chemistry but lacks the diagnostic banding. The trade has classified moss agate within the agate family for decades because the look, the polish, and the durability are essentially the same as banded agate. The trade name is what designers search; the technical name (dendritic chalcedony) appears on the variety page so designers know both terms. -
Are dzi beads real or ancient?
Authentic ancient dzi from the Tibetan plateau are essentially museum artifacts — they don't circulate in the commercial bead trade. Every dzi sold by every bead supplier today (Dakota included) is contemporary manufacture: agate or related chalcedony etched and dyed with the symbolic patterns from the original Tibetan tradition. These are beautiful beads with a meaningful aesthetic lineage; they are not 2,000-year-old artifacts. Sites describing modern dzi as "authentic" without clarifying provenance are conflating bead style with antiquity. -
Is agate dyed?
Most banded agates (Botswana, crazy lace, Lake Superior, Montana, Moroccan seam, terra) are sold natural — the bands are intrinsic. The exceptions in our catalog are dzi (universally dyed and etched) and druzy (frequently dyed). More broadly in the bead market, bright candy-color agates — electric blue, neon purple, magenta, fluorescent green — are dye signals; natural agate's palette is muted. Treatment should be disclosed per strand. -
How can I tell if an agate is dyed?
Three signals: color saturation (natural agate is muted earth/pastel tones — anything electric or neon is dyed), color uniformity (natural banding is irregular; dye that's too even is a tell), and dye creep at the drill hole (dye sometimes pools or migrates into the drill channel). The most reliable signal is buying from a supplier that discloses treatment per strand.