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.

Brazilian Green Tourmaline Cabochon Necklace

Designer: Claudia Berman

Out of stock

Tags

Shipping Date

Shipping Date

More in this Collection

1.72 CT Teal Green Sapphire

Lireille

Teal Green Tourmaline Cabochon Necklace in Gold & Silver

Claudia Berman

Spring Green

Valerie Corvin

Constellation of Aquarius Sapphires Band in 10k gold, Blue and Green Sapphires

Ioulia Efimova

14K Gold Natural Green Sapphire and Diamond Ring

Lireille

Oval Eye-Clean Rose Cut Natural Green Australian Sapphire 1.81 Carat

Lireille

1.76 CTW Oval Red Greenland Ruby Notable Gems® #517502

Lireille

1.60 CT Oval Red Greenland Ruby Notable Gems® #517505

Lireille

Love Ring Bluish Green Tourmaline

Lika Behar

Natural Nephrite Jade Stud Earrings Oval Cabochon

Lireille

24K Gold Diva Ring with Green Tourmaline and Diamonds

Lika Behar

10K White Gold Diamond Band with Baguette Green Peridot

Lireille

9 MM Round Green Amethyst 18k Gold Cup and Oxidised Silver Ring

Shimara Carlow

5 MM Round Green Sapphire and Diamond Stack Rings

Shimara Carlow

Gatta in Green Gafas

Karen Stanton Art

Love Ring - 22K Yellow Gold With Side Diamonds

Lika Behar

14K Gold 10 mm Round Green Amethyst Earrings

Interworld Designs

14K Gold Art Deco Peridot and 0.03 CTW Natural Diamond Earrings

Lireille

14K Gold 0.28 CTW Natural Green Tourmaline Bezel-Set Earrings

Lireille

Double Tourmaline Crystals Ocean Blue and Green Dangle Earrings

Claudia Berman

Brazilian Deep Green Cabochon Tourmaline Earrings

Claudia Berman

Large Brazilian Luminous Misty Green Aquamarine Cabochon Set

Claudia Berman

Bi-Colored Moss And Sea Green Cat’s Eye Tourmaline Cabochon Set

Claudia Berman

Aqua San Andreas Cuff

Jenny Reeves

Aqua Tourmaline Crystal Drops

Jenny Reeves

Tourmaline Pinnacle Pendant

Jenny Reeves

Vario Clasp Tourmaline Pendant

Marcel Roelofs Designs

Large Luminous Mist Green Aquamarine

Claudia Berman

Forest Green Rose Cut Tourmaline Ring

Claudia Berman

Rose Cut Indicolite Blue Tourmaline Stone Ring

Claudia Berman

Bi-Colored Aqua Green Cabochon Pear Shape Tourmaline Ring

Claudia Berman

10k White Gold Emerald-shape Green Peridot Band

Lireille

Katya Ring with Green Tourmaline

Lika Behar

Small Triangle Style Studs

Ben Cooke-Akaiwa

18K Yellow Gold Bezel-set Cluster Green and Blue Tourmaline Ring

Lireille

Prismic Ring

Lika Behar

Black / Green Tahitian Pearl Stud Earrings 9-10 mm