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.

Large Rubellite Brazilian Tourmaline Cabochon Set Necklace in 18k Gold

Designer: Claudia Berman

Tags

Shipping Date

Shipping Date

More in this Collection

Dyed Nylon Faux White Pearl Ring

Jahyun Rita Baek

Handmade Wine Stopper

Cordell Roy

Lireille Gift Card

Lireille

Tiny Enamel Pendant

Kokkino

Raw Ring in Bronze

Olivia Shih

Acorn Stud Earrings Sterling Silver with 18k Gold Accent

Shimara Carlow

Free Hypoallergenic Rubber Earrings Backs

Lireille

Small Target Studs

Kokkino

Large Target Studs

Kokkino

Murano Glass Pendant with Vario Clasps

Marcel Roelofs

Mod Stackable Pearl Ring with White Acrylic

Annie Tung

Small Acorn Cup Pendant in Sterling Silver with 18kt Gold Accent

Shimara Carlow

Medium Enamel Silver Pendant

Kokkino

Ball Earrings with Large Metallic Baroque Pearls Gold-filled Ear Wire

Anchovy

gold and silver wrap earrings- sterling silver and 18ct gold

Shimara Carlow

Maple Seed Drop Earrings

Kelim Jewelry

Flute Earrings (Small)

Kelim Jewelry

Enamel Small Stud Earring

Kokkino

14k Yellow Gold 2 mm Half Round Classic Wedding Band with Silk Finish

Lireille

14K Gold Tiny Freshwater Cultured Pearl Post Earrings

Interworld Designs

14k Gold Bezel Set Oval Turquoise Post Earrings

Lireille

Freshwater Heart Pearl Bracelet with Nylon String

Anchovy

Yellow Brass Center Ring Wrapped in Sterling Silver

Lori Swartz

Twin Necklace with White and Black Pearls on Gold-filled Box Chain

Anchovy

Tread Hoops Earrings XL 2.25" to 2.75"

Lori Swartz

18k Gold Oxidized Acorn Cup Wrap Stud Earrings

Shimara Carlow

Cloud Necklace in Perspex and Oxidized Sterling Silver

Jahyun Rita Baek

Nylon Mesh Ring

Lireille

Medium Drop Enamel Earring

Kokkino

Enamel Large Studs Earrings

Kokkino

Forged Silver Bangle Bracelet

Peg Fetter

18k Yellow Gold 2 mm Half Round Classic Wedding Band with Brushed Finish

Lireille

Mini Rose Petal Necklace

Kelim Jewelry

14k Bumble Bee Post Earrings

Lireille

Halo Silver and Enamel Small Double Drop Necklace

Kokkino

Horned Band Textured Silver Bracelet

Mariella Pilato

Double Concave Post Earrings

Lori Swartz