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.

Forest Green Rose Cut Tourmaline Ring

Designer: Claudia Berman

Tags

Shipping Date

Shipping Date

More in this Collection

Internal Pyramids Quartz Earrings

Mariella Pilato

Redwood Slice Pendant - Large - Opal

Jenny Reeves

Edgy Round Spiky Earrings

Apostolos Jewelry

Apostolos Ruby Earrings

Apostolos Jewelry

Apostolos Ruby Earrings

Apostolos Jewel

Apostolos Necklace

Apostolos Jewelry

Apostolos Cuff Bracelet in Silver and 18k Gold

Apostolos Jewelry

Apostolos Men's Gold and Silver Cuff Bracelet

Apostolos Jewelry

Textured Round Pendant with Champaign Diamond - Large

Apostolos Jewelry

Apostolos Single Ruby Hoop Earrings

Apostolos Jewelry

Round Textured Earring with Diamond and 18k Gold

Apostolos Jewelry

Apostolos Ruby Post Earrings

Apostolos Jewelry

Gold and Steel Vario Clasp Freeform 3D Pendant

Marcel Roelofs

Bimetal Gold and Steel Nugget Vario Clasp Pendant

Marcel Roelofs

Slate with Pyrite Vario Clasp

Marcel Roelofs

Aquamarine Vario Clasp Gold Pendant

Marcel Roelofs

Deck Ring

Lika Behar

My World Ring Aquaprase and Cognac Diamonds

Lika Behar

Stockholm Ring

Lika Behar

Krista Necklace

Lika Behar

Dylan Necklace

Lika Behar

Thames Earrings

Lika Behar

Planet Necklace With White Freshwater Baroque Pearl

Anchovy

Comet Pearl Natural Necklace With Large Firetail Freshwater Pearl

Anchovy

Twin Earrings Short

Anchovy

Enamel Triple Ring Stack

Kokkino

Blue Topaz and Diamond Halo Style Pompei Ring

Lika Behar

Chill-link Bracelet

Lika Behar

Murmur Pebble Medium Studs Oxidized Silver

Olivia Shih

Black Gold Collection Rock Earrings - L

Olivia Shih

Long Fan-Shaped Ruby Earrings

Apostolos Jewelry

Round Textured Pendant with Brown Diamond- Medium

Apostolos Jewelry

Small Double Tear Drop Earrings

Diane Dewey

H2O Post Earrings

Kelim Jewelry

Flower Black Eyed Susan Earrings

Kelim Jewelry

Durum Curvy Wire Earrings

Kelim Jewelry

Buttercup Collage Necklace

Kelim Jewelry