Opal & Tourmaline is the Best October Birthday Gifts all time.

Opal & Tourmaline have become the staple birthstones of October. Opal and Tourmaline are both some of the most beautiful and untraditional of all gemstones. Traditionally represented as pink, the tourmaline can come in many colors of the rainbow. Even seen with 3 colors in one stone, it is known as tri-colored watermelon tourmaline. October sure has the most exciting birthone options in jewelry designs.

Opal is the product of seasonal rains that drenched dry ground in regions such as Australia’s semi-desert “outback.” The showers soaked deep into ancient underground rock, carrying dissolved silica (a compound of silicon and oxygen) downward. During dry periods, much of the water evaporated, leaving solid deposits of silica in the cracks and between the layers of underground sedimentary rock. The silica deposits formed opal.

Opal is known for its unique display of flashing rainbow colors called play-of-color. There are two broad classes of opal: precious and common. Precious Opal displays play-of-color, common opal does not. Play-of-color occurs in precious opal because it’s made up of sub-microscopic spheres stacked in a grid-like pattern—like layers of Ping-Pong balls in a box. As the lightwaves travel between the spheres, the waves diffract, or bend. As they bend, they break up into the colors of the rainbow, called spectral colors. Play-of-color is the result.

The Color of Opal you see varies with the sizes of the spheres. Spheres that are approximately 0.1 micron (one ten-millionth of a meter) in diameter produce violet. Spheres about 0.2 microns in size produce red. Sizes in between produce the remaining rainbow colors.

Although experts divide gem opals into many different categories, five of the main types are:

White or light opal: Translucent to semi translucent, with play-of-color against a white or light gray background color, called bodycolor.
Black opal: Translucent to opaque, with play-of-color against a black or other dark background.
Fire opal: Transparent to translucent, with brown, yellow, orange, or red body color. This material—which often doesn’t show play-of-color—is also known as “Mexican opal.”
Boulder opal: Translucent to opaque, with play-of-color against a light to dark background. Fragments of the surrounding rock, called matrix, become part of the finished gem.
Crystal or water opal: Transparent to semitransparent, with a clear background. This type shows exceptional play-of-color.
Opal october birthstone jewelry is one of the best idea for october birthday gift. Check opal october birthstone jewelry.

Tourmalines come in a wide variety of exciting colors. In fact, tourmaline has one of the widest color ranges of any gem species, occurring in various shades of virtually every hue. Many tourmaline color varieties have inspired their own trade names:

Rubellite is a name for pink, red, purplish red, orangy red, or brownish red tourmaline, although some in the trade argue that the term shouldn’t apply to pink tourmaline.
Indicolite is dark violetish blue, blue, or greenish blue tourmaline. Check below tourmaline jewelry set.
Paraíba is an intense violetish blue, greenish blue, or blue tourmaline from the state of Paraíba, Brazil.
Chrome tourmaline is intense green. In spite of its name, it’s colored mostly by vanadium, the same element that colors many Brazilian and African emeralds.
Parti-colored tourmaline displays more than one color. One of the most common combinations is green and pink, but many others are possible.
Watermelon tourmaline is pink in the center and green around the outside. Crystals of this material are typically cut in slices to display this special arrangement.
Tourmaline birthstone jewelry is another great idea for october birthday gift.

18k gold Brazilian Bicolor Blue and Pink Tourmaline Cabochon Necklace

Designer: Claudia Berman

Out of stock

Tags

Shipping Date

Shipping Date

More in this Collection

22k Gold "Anastasia" Gold Band

Lika Behar

Notable Gems™ Ruby #404201

Lireille

My World Aquaprase Pendant

Lika Behar

14K Gold 2 1/4 CTW Natural Diamond Stackable Bangle 8" Bracelet

Lireille

Sway Necklace with 6 Gold Fused Links

Lika Behar

22K Rose Gold "Peach Glow" Stackable Band With Marquise Diamonds

Lika Behar

Caroline Necklace

Lika Behar

Sun Cornflower Blue Sapphire & Diamond Ring in 22K Gold

Lika Behar

Dima Gold Turquoise Inside Out Hoops

Lika Behar

18k Yellow Gold Green Jadeite Jade Ring

Mason Kay

Pompei Turquoise Ring

Lika Behar

14K Gold 4 Claw Prongs Three-stone Engagement Ring with Lab-grown Diamonds

Lireille

Feldman Ring

Monica Schmid

Hand-woven Choker with Natural Coral

Monica Schmid

18k Solid White Gold Plain Wide Band

Lika Behar

22K Rose Gold "Peach Glow" Solid Plain Band

Lika Behar

Stockholm Crosswire Ring 22k Gold

Lika Behar

24k Gold "Amanda" Medium Size Almond Drop Earrings, 22k Diamond Ear Wires

Lika Behar

KIRSTEN Cuff – 24K Gold, Silver, Pearls & Cognac Diamonds

Lika Behar

Lunar Band 8mm

Jenny Reeves

Signet Tanzanite & Diamond Ring in 22K Gold

Lika Behar

Aqua San Andreas Cuff

Jenny Reeves

LOLA Ring

Katie Poterala

18k Yellow Gold Ice Jadeite Jade Marquise Ring

Mason Kay

Love Ring

Lika Behar

Delphi 24K Gold Freeform Opal Doublet Ring

Lika Behar

Vario Clasp Dendrite Crystal Pendant with Diamonds

Marcel Roelofs

14K Gold 1 1/2 CTW Natural Diamond Stackable Bangle 8" Bracelet

Lireille

14k Solid White Gold 4.3mm Miami Cuban Chain Necklace #DCU140W

Lireille

14k Yellow Gold 4.3mm Solid Miami Cuban Chain Necklace #DCU140

Lireille

18k Palladium White Gold Prong Set Center Stone Accented Channel Set Engagement Ring, Custom Design for Riza

Lireille

18ct Gold Wrap Ring with Lavender Sapphire and Champagne Diamond

Shimara Carlow

Metamorphosis Jewelry Cabinet

Alison McLennan

Lunar Band 7mm

Jenny Reeves

Ocean Necklace

Lika Behar

18K Yellow Gold Brushed Matte Finish Concave Ring 14.5 mm

Lika Behar

St. Croix Bracelet