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 Promise Ring with Pink Tourmaline - 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 $220.00 at Gemvara
no photoRound Fire Opal Sterling Silver Promise Ring with Pink Tourmaline - Written in the Stars Ring
$220.00
Gemvara
Oval Citrine Sterling Silver Mother's Ring with Fire Opal & Citrine - Seven-Stone Gala Band
Seven oval gemstones shine in this modern band, handcrafted in your choice of gems and metals.Only $365.00 at Gemvara
no photoOval Citrine Sterling Silver Mother's Ring with Fire Opal & Citrine - Seven-Stone Gala Band
$365.00
Gemvara
Diamond And Created Opal Women's Ring: I Am With You Still Jewelry
You feel their presence with each new dawn. The memory of your loved one continues to color your every day, their spirit forever in your heart. Now we bring you a comforting tribute to the everlasting bond you and your loved one share with this diamond...Only $119.00 at The Bradford Exchange Online
no photoDiamond And Created Opal Women's Ring: I Am With You Still Jewelry
$119.00
The Bradford Exchange Online
Round White Sapphire Sterling Silver Vintage-Inspired Ring with Fire Opal & Pink Sapphire - 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 $210.00 at Gemvara
no photoRound White Sapphire Sterling Silver Vintage-Inspired Ring with Fire Opal & Pink Sapphire - Venus Band
$210.00
Gemvara
Round Green Amethyst Sterling Silver Engagement Ring with Fire Opal - Trios Ring
A classic favorite, the graceful and sleek movement of this three-stone ring uplifts a round brilliant gem center supported by smaller pear-shaped stones. While the design embodies a past-present-future message, it is the now you will enjoy most in...Only $345.00 at Gemvara
no photoRound Green Amethyst Sterling Silver Engagement Ring with Fire Opal - Trios Ring
$345.00
Gemvara
Via Collection Faux Fire Opal and Crystal Drop Earrings
Make a splashy high style entrance without the high price with these dramatic drop earrings from our Via Collection. Oval faux fire opal stones provide the spicy color while clear crystal rounds sprinkle the design with elegance. Clip/post, goldtone...Only $75.00 at Ross-Simons
no photoVia Collection Faux Fire Opal and Crystal Drop Earrings
$75.00
Ross-Simons
Oval Fire Opal Sterling Silver Engagement Ring with London Blue Topaz - 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 $370.00 at Gemvara
no photoOval Fire Opal Sterling Silver Engagement Ring with London Blue Topaz - Audra Ring
$370.00
Gemvara
Sterling Silver Mother's Ring with Fire Opal & Citrine - Double Embrace Ring
Two, 4mm round-cut gemstones are held in the curve of this stunning, contemporary design. Choose your gems and metal.Only $240.00 at Gemvara
no photoSterling Silver Mother's Ring with Fire Opal & Citrine - Double Embrace Ring
$240.00
Gemvara
Round Fire Opal Sterling Silver Vintage-Inspired Ring with Diamond & Red Garnet - 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 Fire Opal Sterling Silver Vintage-Inspired Ring with Diamond & Red Garnet - Venus Band
$220.00
Gemvara
"14k Yellow Gold 12mm Wide by 16mm Mens Opal and Cubic Zirconia Ring"
"14K Gold Opal ring with Cubic Zirconia accents; measures approximately 12mm W x 16mm across the top."Only $646.00 at Sarraf Jewelry
no photo"14k Yellow Gold 12mm Wide by 16mm Mens Opal and Cubic Zirconia Ring"
$646.00
Sarraf Jewelry
Oval Fire Opal Sterling Silver Engagement Ring with Ruby - Kira Ring
Polished, tailored and modern, this three-stone style has a streamlined design. This style's sleek bezel settings are especially perfect for the active woman.Only $295.00 at Gemvara
no photoOval Fire Opal Sterling Silver Engagement Ring with Ruby - Kira Ring
$295.00
Gemvara
Sterling Silver Necklace with Fire Opal & Aquamarine - Eternal Heart Pendant
Eternal love is beautifully expressed in the infinite line of this heart pendant. Carefully handcrafted in your choice of gems and metals.Only $190.00 at Gemvara
no photoSterling Silver Necklace with Fire Opal & Aquamarine - Eternal Heart Pendant
$190.00
Gemvara
Round Emerald Sterling Silver Promise Ring with Fire Opal - 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 Emerald Sterling Silver Promise Ring with Fire Opal - Written in the Stars Ring
$260.00
Gemvara
Pink Opal Point Hand-Knotted Necklace - Nest - Pink
NestPink Opal Point Hand-Knotted NecklaceDetailsTwo strands of variegated pink opal, hand-knotted on silk cord.Woven chain necklace.19inL x 3inW.Lobster clasp.Made in USA.Only $177.00 at Neiman Marcus
no photoPink Opal Point Hand-Knotted Necklace - Nest - Pink
$177.00
Neiman Marcus
Round Fire Opal Sterling Silver Mother's Ring with Aquamarine & Peridot - Liana Ring with Three Gems
This lovely leafy vine ring twines across the finger while brilliant gems bloom among the leaves.Only $185.00 at Gemvara
no photoRound Fire Opal Sterling Silver Mother's Ring with Aquamarine & Peridot - Liana Ring with Three Gems
$185.00
Gemvara

Opal Jewelry - Hover over an item for more information
Sterling Silver Ring with Peridot & Fire Opal - Hope Band
Inscribed with inspiration, the Hope Band has 4 vibrant gemstones and is carefully handcrafted in your choice of gems and metals.Only $250.00 at Gemvara
no photoSterling Silver Ring with Peridot & Fire Opal - Hope Band
$250.00
Gemvara
Sterling Silver Anniversary Ring with Fire Opal & Iolite - Slim Nine-Gem Band
Nine brilliant gems line the front of this classic band ring.Only $310.00 at Gemvara
no photoSterling Silver Anniversary Ring with Fire Opal & Iolite - Slim Nine-Gem Band
$310.00
Gemvara
Sterling Silver CZ, Rainbow Fire Australian Black Opal Doublet (Boulder Opal) Pendant
Handmade by Master Artisan. See more details at JeGem.com.Only $116.99 at JeGem.com
no photoSterling Silver CZ, Rainbow Fire Australian Black Opal Doublet (Boulder Opal) Pendant
$116.99
JeGem.com
Oval Fire Opal 14K Rose Gold Engagement Ring with Fire Opal - Gabrielle Ring
This design plays beautifully with opposites. The graceful curves of a center oval gem are echoed by back to back arcs on each side accented by eight brilliant gems. Bold but delicate too, you'll find it goes with everything you wear.Only $805.00 at Gemvara
no photoOval Fire Opal 14K Rose Gold Engagement Ring with Fire Opal - Gabrielle Ring
$805.00
Gemvara
Opal Deco Necklace - Multi - Soft Surroundings
Intriguing necklace - a mix of romantic and rustic - pairs a delicate Art Deco-influenced goldtone pendant, designed with dazzling Swarovski crystal borders and an opalescent glass cabochon, with a texturally contrasting leather cord, embellished with...Only $129.95 at Soft Surroundings
no photoOpal Deco Necklace - Multi - Soft Surroundings
$129.95
Soft Surroundings
Men's Sterling Silver Ring with Fire Opal - Shield Ring
The shield of this ring features one brilliant gem. It's bold scale and ample proportions make a strong statement. The three supports for the gem symbolize liberty, democracy, and justice.Only $380.00 at Gemvara
no photoMen's Sterling Silver Ring with Fire Opal - Shield Ring
$380.00
Gemvara
Round Iolite Sterling Silver Promise Ring with Citrine & Fire Opal - Modern Heart Ring
This stylishly-simple heart ring is carefully handcrafted in your choice of gems and metals.Only $205.00 at Gemvara
no photoRound Iolite Sterling Silver Promise Ring with Citrine & Fire Opal - Modern Heart Ring
$205.00
Gemvara
Round Fire Opal Sterling Silver Mother's Ring with Fire Opal - Triple Twist Ring
A Mobius strip of precious metal curves around three gemstones in a stylish ring style.Only $340.00 at Gemvara
no photoRound Fire Opal Sterling Silver Mother's Ring with Fire Opal - Triple Twist Ring
$340.00
Gemvara
Round London Blue Topaz Sterling Silver Promise Ring with Fire Opal - 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 $220.00 at Gemvara
no photoRound London Blue Topaz Sterling Silver Promise Ring with Fire Opal - Written in the Stars Ring
$220.00
Gemvara
Oval Fire Opal Sterling Silver Engagement Ring - Oval Solitaire Ring
Simply perfect, this elegant ring has a sleek tapered shank that narrows slightly as it reaches the center gem.Only $295.00 at Gemvara
no photoOval Fire Opal Sterling Silver Engagement Ring - Oval Solitaire Ring
$295.00
Gemvara
14k Pink Opal Marquise Necklace - Lana - Pink (14k )
Lana14k Pink Opal Marquise NecklaceDetailsNecklace by Lana.14-karat yellow gold flat link chain.Marquise-cut pink opal pendant.Designer About Lana:Launched in 2002, designer Lana Bramlette's cool, minimalist line of jewelry has resulted in dozens of...Only $785.00 at Neiman Marcus
no photo14k Pink Opal Marquise Necklace - Lana - Pink (14k )
$785.00
Neiman Marcus
Round Fire Opal Sterling Silver Mother's Ring with Ruby & Red Garnet - Liana Ring with Three Gems
This lovely leafy vine ring twines across the finger while brilliant gems bloom among the leaves.Only $205.00 at Gemvara
no photoRound Fire Opal Sterling Silver Mother's Ring with Ruby & Red Garnet - Liana Ring with Three Gems
$205.00
Gemvara
Round Fire Opal Sterling Silver Mother's Ring with Alexandrite & Diamond - Liana Ring with Three Gems
This lovely leafy vine ring twines across the finger while brilliant gems bloom among the leaves.Only $270.00 at Gemvara
no photoRound Fire Opal Sterling Silver Mother's Ring with Alexandrite & Diamond - Liana Ring with Three Gems
$270.00
Gemvara
Round White Sapphire Sterling Silver Vintage-Inspired Ring with 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 $205.00 at Gemvara
no photoRound White Sapphire Sterling Silver Vintage-Inspired Ring with Fire Opal - Venus Band
$205.00
Gemvara
Sterling Silver Necklace with Fire Opal - Love Letters 'S' Pendant With Gem
You choose the lowercase letter below and the meaning behind it. Artisans handcraft the precious metal of your choice in a single flowing line, and accent the design with your favorite gem. The chain threads directly through the letter.Only $135.00 at Gemvara
no photoSterling Silver Necklace with Fire Opal - Love Letters 'S' Pendant With Gem
$135.00
Gemvara
 


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