Gemstones by Shape

Onyx is a striped, semiprecious variety of agate, with white, black, brown or red alternating bands. It is different from regular agate only in that the bands of which it is composed are parallel and regular. The name onyx originates from the Greek word...

Onyx is a striped, semiprecious variety of agate, with white, black, brown or red alternating bands. It is different from regular agate only in that the bands of which it is composed are parallel and regular. The name onyx originates from the Greek word...

This semiprecious basic black gemstone closely resembles black onyx, but since we have been unable to verify its true classification, "black stone" is the most honest name we can give to these beads and pendants. Note that black stone jewelry components...

Bronzite is part of the pyroxene group. Bronzite is a hypersthene, and is more properly called enstatite, or when it has more iron, ferrosilite. This form of pyroxene is chemically "weathered" resulting in an opaque stone with a submetallic luster,...

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Turquoise has been revered for thousands of years. Its name means "Turkish stone" in French, a reference to where Persian material passed on its way to Europe. Turquoise is considerably softer than quartz, and is usually treated for stability. Chinese...

Crazy Lace Agate gemstone beads (sometimes known as fashion jasper beads) offer dramatic twisting and turning bands of color. The untreated, natural hues of these semiprecious gemstone beads most commonly consist of yellow and gray, sometimes with shades...

Find related items below, and find out more about jasper in our Gemstone Index. Questions? E-mail us for friendly, expert help!

Iolite: This silicate mineral (cordierite) can occur as crystals or grains in igneous rocks, as a result of aluminous sediment in magma. Also known as water sapphires, dichroite, Spanish lazulite, and Vikings' compass, the transparent purple-blue variety...

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Tigereye Beads come in richly chatoyant browns and yellows with a golden luster. While legends exist of Roman soldiers wearing this "all seeing" stone for protection in battle, tigereye was not considered a semiprecious gemstone until the late 19th...

Tigereye Beads come in richly chatoyant browns and yellows with a golden luster. While legends exist of Roman soldiers wearing this "all seeing" stone for protection in battle, tigereye was not considered a semiprecious gemstone until the late 19th...

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Dyed "Crazy Lace" Calcite is available in fantastic color options, for great prices. It is clearly a "reconstituted" or "block" type of gemstone, which means it is a mixture of resin, dyes, and potentially some gemstone content -- in this case,...

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Larvikite, more commonly known as black labradorite, is an igneous rock that occurs only in the Oslo rift near Larvik, Norway. Like labradorite, larvikite is a coarse-grained mixture of plagioclase and feldspar. Individual grains of anorthoclase within...

Lavender amethyst beads are cut from a pale, subtly striped variety of amethyst. This semiprecious gemstone is a lower grade of amethyst, so beads cut from it are more economically priced than darker, more translucent amethyst beads. Despite displaying...

Lepidolite beads are cut from an uncommon mica that has been inconsistently available in the mineral market. Also known as gem lepidolite, lavenderine, and lepidolite mica, this semiprecious gemstone is a by-product of mining lithium. Unpolished...

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Find related items below, and find out more about jasper in our Gemstone Index. Questions? E-mail us for friendly, expert help!

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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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Rock crystal quartz, the most common form of macrocrystalline quartz, is a clear quartz with a colorless, transparent, quiet beauty. We're told that our supply of rock crystal beads is natural, but occasionally we suspect we've been sold lab-grown...

Brownish smoky quartz beads are almost always cut from rock crystal quartz that has been heat-treated to produce this coveted color (ours included). Tones of smoky quartz range from yellowish to deep translucent brown. Good specimens of natural untreated...

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Strawberry vs. Cherry quartz: Sometimes cherry "quartz" (a pretty pink imitation gemstone) is erroneously called strawberry quartz. You can see the difference between the two gemstones if you look closely (you may need a loupe or magnifier). Cherry...

Garnets are named after punica granatum (pomegranate), due to garnet's resemblance to pomegranate seeds. Garnets come in a variety of shades, but generally when you hear the word "Garnet" you think of this deep rich red. Garnet is actually a group of...

Lepidolite beads are cut from an uncommon mica that has been inconsistently available in the mineral market. Also known as gem lepidolite, lavenderine, and lepidolite mica, this semiprecious gemstone is a by-product of mining lithium. Unpolished...

African turquoise is a descriptive name: it is not true turquoise, but actually a jasper found in Africa. These semiprecious beads have a matrix structure similar to that of turquoise, and are light bluish-green in color.The matrix in African turquoise...

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Onyx is a striped, semiprecious variety of agate, with white, black, brown or red alternating bands. It is different from regular agate only in that the bands of which it is composed are parallel and regular. The name onyx originates from the Greek word...

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Cacoxenite by itself is an iron aluminium phosphate mineral associated with iron mining. It has a silky luster, and a hexagonal crystalline structure that grows in a radial pattern. When it forms within amethyst and other forms of quartz, it displays as...

Create a bold gleam in your style with these Dakota Stones beads. These gemstone beads feature a round shape with a star cut filled with triangular facets. With 20 facets, a star cut gemstone enhances even the most intense colors. It makes a great...

Bring gemstone style to your jewelry designs with these Dakota Stones beads. These beads take on a classic round shape with beautiful facets that shine from every angle. You'll love the way they catch the eye in your projects. They feature a deep emerald...

Fancy jasper beads are also known as India agate beads. These pretty semiprecious beads and gemstone donuts add color to any jewelry application with their swirls and speckles of lavender, green, pink, orange, and/or red on an opaque creamy beige or gray...

Garnets are named after punica granatum (pomegranate), due to garnet's resemblance to pomegranate seeds. Garnet is the most popular and well-known birthstone for January. Please see the Related Products links below for similar items, and more...

Garnet is actually a group of closely related isomorphic minerals which can even intergrow within one crystal! Our green garnet beads are most likely Grossular garnet, which has a wide range of potential colors from a warm cinnamon color through shades...

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Sand-colored picture jasper beads display streaks and marking that often seem to depict landscapes - from desert sand dunes to rocky mountains to dry riverbeds. This semiprecious gemstone is actually petrified mud. The mud was rich in quartz that oozed...

Tourmaline is a complex crystalline silicate containing aluminum, boron and other elements. Its name derives from the Sinhalese (Sri Lankan) word tura mali, meaning "stone of mixed colors," and tourmaline is indeed found in blue (indicolite), yellow,...

Natural rainbow amazonite beads offer a wider color range than our other semiprecious amazonite beads, displaying not just shades of pale sea-mist blue-green, but also gray, brown, yellow, and rust. Some of these semiprecious gemstone beads contain...

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Rose quartz is one of the most desirable varieties of quartz in the gemstone trade. Also known as ancona ruby and mont blanc ruby, these semiprecious gemstones display a lovely, unique pink tone. Rose quartz beads have been found in Mesopotamia that date...

Rose quartz is one of the most desirable varieties of quartz in the gemstone trade. Also known as ancona ruby and mont blanc ruby, these semiprecious gemstones display a lovely, unique pink tone. Rose quartz beads have been found in Mesopotamia that date...

Brownish smoky quartz beads and briolettes are almost always cut from rock crystal quartz that has been heat-treated to produce this coveted color (ours included). Tones of smoky quartz range from yellowish to dep translucent brown. Good specimens of...

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Rose quartz is one of the most desirable varieties of quartz in the gemstone trade. Also known as ancona ruby and mont blanc ruby, these semiprecious gemstones display a lovely, unique pink tone. While most rose quartz on the market is dyed to maintain...

Druzy: The stunning visual appeal of druzy beads and pendants makes them great options for jewelry focals. Sometimes spelled druse or drusy, druzy is a layer of fine crystals that forms on the inner surfaces of geodes and rock fractures over millions of...

Yellow Opal gemstone beads have the same basic chemical composition as quartz, but usually contains 6 - 10% water. Common Opal (sometimes called opalite) does not have the flashes of light found in precious opal, but both common opal and precious opal...

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Amazonite (sometimes called Amazon stone) is a rare blue-green variety of microcline (a feldspar mineral) used as a semiprecious stone. Its brilliant color was once thought to be caused by copper, but now is attributed to the presence of lead or possibly...

Cacoxenite by itself is an iron aluminium phosphate mineral associated with iron mining. It has a silky luster, and a hexagonal crystalline structure that grows in a radial pattern. When it forms within amethyst and other forms of quartz, it displays as...

Sunstone beads consist of feldspar crystals that were formed in molten lava, then discharged onto the surface of the earth by volcanic eruptions. As the lava weathers away or is broken up, the crystals are released. This semiprecious gemstone is also...

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African Turquoise BeadsAfrican turquoise is a descriptive name and is not true turquoise, but actually a jasper found in Africa. These semiprecious beads have a matrix structure similar to that of turquoise, and are light bluish-green in color. Jasper is...

Amazonite is a rare blue-green variety of microcline (a feldspar mineral) used as a semiprecious stone. Amazonite (sometimes called Amazon Stone) is an opaque stone, often found with white, yellow or gray inclusions and a silky luster or silvery sheen...

Amethyst is the most highly prized variety of quartz, and if not for its widespread availability, would be very expensive. With its luscious purple color, it is the official birthstone for February and one of our best-selling gemstones. The stone's name...

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Onyx is a striped, semiprecious variety of agate, with white, black, brown or red alternating bands. It is different from regular agate only in that the bands of which it is composed are parallel and regular. The name onyx originates from the Greek word...

Sardonyx is a variety of onyx that typically comes in shades of red (the word "sard" means "red"). Our Black Sardonyx beads are predominantly black, with bands, stripes and swirls of bright white, milky semitranslucent white, and occasionally dark...

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The name apatite is quite appropriate, considering this mineral makes up the teeth in all vertebrate animals (and teeth are used to satisfy one's appetite!). In fact, it comprises more than 60% of the bones and teeth in humans, fish, birds, cows, and...

Dyed "Crazy Lace" Calcite is available in fantastic color options, for great prices. It is clearly a "reconstituted" or "block" type of gemstone, which means it is a mixture of resin, dyes, and potentially some gemstone content -- in this case,...

Dyed "Crazy Lace" Calcite is available in fantastic color options, for great prices. It is clearly a "reconstituted" or "block" type of gemstone, which means it is a mixture of resin, dyes, and potentially some gemstone content -- in this case,...

Bring the beauty of gemstones to your designs with this aquamarine beads from Dakota Stones. These beads feature a round shape with facets that help catch the light. Aquamarine is the Latin term for “water of the sea.” This stone was once thought to be...

Gemstone style fills these beads from Dakota Stones. These blue apatite beads have a round shape with facets that catch the light. Blue apatite is a blue transparent phosphate material. It derives from the Greek word "apate," meaning to deceive, because...

Bold style fills these Dakota Stones beads. These beads take on a classic round shape with beautiful facets that shine from every angle. You'll love the way they catch the eye in your projects. The dark blue color of these beads is lit up by flecks of...

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Eagle Eye (Jasper?): It's difficult to find reliable information on Eagle Eye. We were told it's jasper, but it has hints of shimmer and translucence that don't normally occur in jaspers. Is it feldspar (like moonstone and labradorite)? Is it a gray form...

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Howlite beads are cut from a naturally white form of calcium silicoborate that often features a dark gray or black spider-web matrix. Sometimes called albino turquoise, white jasper, or white turquoise, naturally white howlite is perfect for creating...

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Labradorite beads and pendants offer striking rainbow-colored reflections when light hits them from a particular direction. The labradorescence, or schiller, in these semiprecious beads and pendants offers the same stunning visual effect created by...

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Malachite beads are also known as peacock stone beads, pseudo emerald beads, and silver peak jade beads. This lush green gemstone is a basic copper carbonate that is vividly banded. It is a chemical twin of azurite, and the two stones are commonly found...