Boulder Opal

OCTOBER'S
BIRTHSTONE
OPAL

Jelly Opal
Yowah Nut Opal Hyalite Precious Opal Opalite
  Like: Share:  

Opal is the modern birthstone for October; an alternate Zodiac stone for Aries, Libra, and Scorpio; and the gemstone gift for the 18th anniversary. Opal has been associated with hope, faith, and confidence.

Opal has been a popular gem for many centuries. It has the same chemical formula as quartz with the addition of 5 to 10 percent water. Structurally it consists of tiny spheres with water filling the gaps. These spheres in most Opals are irregular in size and inconsistent in concentration. Yet in Precious Opal, the variety used most often in jewelry, there are many organized pockets of the spheres. These pockets contain spheres of approximately equal size and have a regular concentration, or structure, of the spheres. This has the effect of diffracting light at various wavelengths, creating colors. Each pocket produces a different color, with a different intensity depending on the angle from which a viewer sees it. The multicolored flashes of light that Opal emits gives it a truly beautiful and valuable look, called a play of light.

The name opal probably is derived from the Sanskrit name for precious stone; upala. It has been mined for centuries, at least since Roman times when they extracted the opal from areas now within the Czech Republic. The Aztecs made use of local Mexican sources as did the Spaniards when they exported the material back to Europe. Today most precious opal comes from Australia with significant sources from Mexico and the Western United States.

Not all opal is so precious however. Common opal lacks a play of light, color or luster and is (after all) common. Opal is often imitated, forged and "enhanced".

While opal is generally white or colorless, it may also be pale yellow, pale red, gray or black when impurities are common. Diffraction can cause flashes of any color of the rainbow (opalescence).

Note that the water in opal's structure may be critical for the optimal play of color. Over time, a once beautiful opal may become dull, due to the loss of water. For this reason, opal miners store their "rough" in jars full of water. It may be wise to store valuable opal jewelry the same way!

For more information on the mineral opal, see the opal page.

For natural opal specimens, see our Opal specimens pages.

Opal Jewelry - Hover over an item for more information
Round Fire Opal Sterling Silver Ring - Adrianna Ring
A classic, four-prong setting is the perfect way to display this 5mm showstopper, round-cut gem.Only $290.00 at Gemvara
no photoRound Fire Opal Sterling Silver Ring - Adrianna Ring
$290.00
Gemvara
Sterling Silver Birthstone Girl Charm Pendant, Opal-october, Womens
Charm her with an adorable sterling silver girl pendant, styled with a diamond-accent skirt and your choice of birthstone buttons. A gift with special meaning for any mom or grandmother. Metal: Sterling silverStones: All genuine except sapphire, ruby,...Only $62.49 at jcpenney
no photoSterling Silver Birthstone Girl Charm Pendant, Opal-october, Womens
$62.49
jcpenney
Sterling Silver Lab-Created Opal & Diamond-Accent Bracelet, Womens
The iridescent beauty of opals shines through on this exquisite bracelet, featuring diamond accents for an extra touch of sparkle. Metal: Sterling silver Stones: Lab-created oval opals, 7x5mmOther Stones: Diamond accentsSetting: ProngClosure: Box...Only $194.99 at jcpenney
no photoSterling Silver Lab-Created Opal & Diamond-Accent Bracelet, Womens
$194.99
jcpenney
Round Fire Opal Sterling Silver Ring with Blue Topaz - Triple Twist Ring
A Mobius strip of precious metal curves around three gemstones in a stylish ring style.Only $320.00 at Gemvara
no photoRound Fire Opal Sterling Silver Ring with Blue Topaz - Triple Twist Ring
$320.00
Gemvara
Round Fire Opal Sterling Silver Ring - Aeryn Round Ring
A 5mm, round-cut center stone is captured in a brilliant circle of your favorite precious metal.Only $285.00 at Gemvara
no photoRound Fire Opal Sterling Silver Ring - Aeryn Round Ring
$285.00
Gemvara
Oval Fire Opal Sterling Silver Ring with Red Garnet & Fire Opal - Freya Ring
A 6mm, oval center stone is enhanced by accent gems set into this gorgeous band, handcrafted in your choice of gems and metals.Only $380.00 at Gemvara
no photoOval Fire Opal Sterling Silver Ring with Red Garnet & Fire Opal - Freya Ring
$380.00
Gemvara
3.40ct t.w. Multi-Stone, Fire Opal Rainbow Ring in Silver
One look and you'll be hooked on the amazing hues of this rainbow ring. Colored with fire opals and 3.40 ct. t.w. multi-stones, including citrines, peridots, apatites, iolites, tanzanites, amethysts, garnets and rhodolite garnets. Sterling silver ring.Only $135.00 at Ross-Simons
no photo3.40ct t.w. Multi-Stone, Fire Opal Rainbow Ring in Silver
$135.00
Ross-Simons
Round Peridot Sterling Silver Ring with Fire Opal & Citrine - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $205.00 at Gemvara
no photoRound Peridot Sterling Silver Ring with Fire Opal & Citrine - Venus Band
$205.00
Gemvara
Lab-Created Opal & White Sapphire Sterling Silver Cross Pendant, Womens
Traditional symbols of inspiration and healing blend beautifully in this opal cross pendant accented with white sapphires and sterling silver. Metal: Rhodium-plated 14K yellow gold over sterling silver and rhodium-plated sterling silverStones:...Only $56.24 at jcpenney
no photoLab-Created Opal & White Sapphire Sterling Silver Cross Pendant, Womens
$56.24
jcpenney
Round Fire Opal Sterling Silver Ring - Timeless Knot Ring
An elegant ring with a 5mm center stone, this knot is carefully handcrafted in your choice of gems and metals.Only $265.00 at Gemvara
no photoRound Fire Opal Sterling Silver Ring - Timeless Knot Ring
$265.00
Gemvara
Round Red Garnet Sterling Silver Ring with Diamond & Fire Opal - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $220.00 at Gemvara
no photoRound Red Garnet Sterling Silver Ring with Diamond & Fire Opal - Venus Band
$220.00
Gemvara
Round Peridot Sterling Silver Ring with Fire Opal - Liana Ring with Three Gems
This lovely leafy vine ring twines across the finger while brilliant gems bloom among the leaves.Only $190.00 at Gemvara
no photoRound Peridot Sterling Silver Ring with Fire Opal - Liana Ring with Three Gems
$190.00
Gemvara
Oval Fire Opal Sterling Silver Ring with Sapphire & Black Onyx - Audra Ring
A glittering band of 1.5mm accent stones perfectly complements this 6mm oval, crowning beauty, carefully handcrafted in your choice of gems and metals.Only $355.00 at Gemvara
no photoOval Fire Opal Sterling Silver Ring with Sapphire & Black Onyx - Audra Ring
$355.00
Gemvara
Lab-Created Opal Pendant with Diamond Accents, Womens
A single opal sits majestically in a pendant framed by sparkling genuine diamond accents. Opal is the birthstone for October. Metal: 14K yellow gold-plated sterling silverStones: 1.1 ct. lab-created opal, 12x8mmOther Stones: Genuine diamond...Only $149.99 at jcpenney
no photoLab-Created Opal Pendant with Diamond Accents, Womens
$149.99
jcpenney
Opal, 1.80ct t.w. Multi-Stone Ring in, White Topaz Silver
A freshly picked flower for your finger, this ring cradles an oval opal in petals of 1.30 ct. t.w. pear-shaped tanzanite and .50 ct. t.w. round green chrome diopside. White topaz accents are sprinkled like shiny drops of dew. Sterling silver ring. Opal...Only $153.75 at Ross-Simons
no photoOpal, 1.80ct t.w. Multi-Stone Ring in, White Topaz Silver
$153.75
Ross-Simons

Opal Jewelry - Hover over an item for more information
3 TCW Tanzanite Cubic Zirconia, Clear Cubic Zirconia and Blue Opal Ring in Sterling Silver
. Resembling an exclusive designer bauble, this round tanzanite cubic zirconia ring captures a luxe-lifestyle look with its ultra-rich design sparked by clear cubic zirconia accents. 3 carats T.W. Inlaid lab-created blue opal accents are intricately...Only $75.99 at PalmBeachJewelry
no photo3 TCW Tanzanite Cubic Zirconia, Clear Cubic Zirconia and Blue Opal Ring in Sterling Silver
$75.99
PalmBeachJewelry
Round Fire Opal Sterling Silver Ring with Fire Opal - Liana Ring with Three Gems
This lovely leafy vine ring twines across the finger while brilliant gems bloom among the leaves.Only $195.00 at Gemvara
no photoRound Fire Opal Sterling Silver Ring with Fire Opal - Liana Ring with Three Gems
$195.00
Gemvara
Sterling Silver Ring with Fire Opal & Sapphire - Slim Nine-Gem Band
Nine brilliant gems line the front of this classic band ring.Only $355.00 at Gemvara
no photoSterling Silver Ring with Fire Opal & Sapphire - Slim Nine-Gem Band
$355.00
Gemvara
Sterling Silver Ring with Sapphire & Fire Opal - Two Hearts Ring
Two hearts meet in one simply perfect ring style. Create this style in your birthstones to add extra meaning.Only $230.00 at Gemvara
no photoSterling Silver Ring with Sapphire & Fire Opal - Two Hearts Ring
$230.00
Gemvara
Oval Cabochon Opal and Diamond Pendant in Sterling Silver
Oval Cabochon Opal and Diamond Pendant in Sterling SilverOnly $119.00 at Angara.com
no photoOval Cabochon Opal and Diamond Pendant in Sterling Silver
$119.00
Angara.com
" 14k White Gold Oval Opal Pendant accented by a single Diamond 9x7"
"A gorgeous and classic 14K White gold Oval Opal pendant accented by 0.02ct round diamond. The measurements of the center stone is (9x7)."Only $125.00 at Sarraf Jewelry
no photo" 14k White Gold Oval Opal Pendant accented by a single Diamond 9x7"
$125.00
Sarraf Jewelry
Genuine Opal & Diamond-Accent Bracelet In Sterling Silver, White, Womens
Alluring and delicate, this genuine opal and diamond-accent pendant is crafted in brightly polished sterling silver. Metal: Sterling silverStone: Genuine opalOther Stones: Diamond accents Setting: ProngClosure: Lobster claspLength: 7 1/4in Gemstones...Only $74.99 at jcpenney
no photoGenuine Opal & Diamond-Accent Bracelet In Sterling Silver, White, Womens
$74.99
jcpenney
Mosaic Opal and Braided Black Leather Necklace in Two-Tone. 20"
Designed in Bali with a removable two-tone and colorful mosaic pendant. Braided black leather necklace with sterling silver and 18kt yellow gold. Opal birthstones are the perfect gift for October birthdays.Only $130.00 at Ross-Simons
no photoMosaic Opal and Braided Black Leather Necklace in Two-Tone. 20"
$130.00
Ross-Simons
Sterling Silver Rainbow Fire Solid Australian Crystal Opal Heart Pendant
Handmade by Master Artisan. See more details at JeGem.com.Only $131.99 at JeGem.com
no photoSterling Silver Rainbow Fire Solid Australian Crystal Opal Heart Pendant
$131.99
JeGem.com
Opal, 1.80ct t.w. Multi-Stone Ring in, White Topaz Silver
A freshly picked flower for your finger, this ring cradles an oval opal in petals of 1.30 ct. t.w. pear-shaped tanzanite and .50 ct. t.w. round green chrome diopside. White topaz accents are sprinkled like shiny drops of dew. Sterling silver ring. Opal...Only $153.75 at Ross-Simons
no photoOpal, 1.80ct t.w. Multi-Stone Ring in, White Topaz Silver
$153.75
Ross-Simons
Round Fire Opal Sterling Silver Ring with Emerald - Written in the Stars Ring
Two glittering gemstones and numerous star etchings rest atop the hollowed upper band of this gleaming ring, designed for the stargazers among us.Only $260.00 at Gemvara
no photoRound Fire Opal Sterling Silver Ring with Emerald - Written in the Stars Ring
$260.00
Gemvara
Sterling Silver Ring with Amethyst & Fire Opal - Simplicity Princess Matching Band
This band perfectly complements the Simplicity Princess Ring.Only $260.00 at Gemvara
no photoSterling Silver Ring with Amethyst & Fire Opal - Simplicity Princess Matching Band
$260.00
Gemvara
Oval Fire Opal Sterling Silver Ring with Red Garnet & Fire Opal - Freya Ring
A 6mm, oval center stone is enhanced by accent gems set into this gorgeous band, handcrafted in your choice of gems and metals.Only $380.00 at Gemvara
no photoOval Fire Opal Sterling Silver Ring with Red Garnet & Fire Opal - Freya Ring
$380.00
Gemvara
14k Gold Round Pink Opal Ring - Lana - Pink (14k )
Lana14k Gold Round Pink Opal RingDetailsRing by Lana.14-karat yellow gold.Round-cut pink opal center.Flat link chain bezel.Designer About Lana:Launched in 2002, designer Lana Bramlette's cool, minimalist line of jewelry has resulted in dozens of pieces...Only $895.00 at Neiman Marcus
no photo14k Gold Round Pink Opal Ring - Lana - Pink (14k )
$895.00
Neiman Marcus
Sterling Silver Ring with Fire Opal & Red Garnet - Double Knots Ring
This gorgeous, contemporary setting forms a pair of knots, each enclosing a stunning, 3mm, prong-set stone. It's carefully handcrafted in your choice of gems and metals.Only $180.00 at Gemvara
no photoSterling Silver Ring with Fire Opal & Red Garnet - Double Knots Ring
$180.00
Gemvara
 


Copyright ©1995-2012 by Amethyst Galleries, Inc.
Site design & programming by galleries.com web services