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.

Opal Necklace

Designer: Anchovy

Tags

Shipping Date

Shipping Date

More in this Collection

White Keshi Pearls Twin Earrings with Gold-filled Chain

Anchovy

Multi-Gemstone Gold Filled Bracelet with Aquamarine, Sun Stone, and Pearls

Anchovy

Multi-Gemstone Gold Filled Bracelet with Aquamarine, Pearl, and Apatite

Anchovy

Multi-Gemstone Gold Filled Bracelet with Lapis and Pearl

Anchovy

Ethiopian Opal 14 Karat Solid Yellow Gold Stud Earrings

Anchovy

Ethiopian Opal Gold-filled Post Earrings

Anchovy

Large Keshi Pearl Gold-filled Post Earrings

Anchovy

Large White Freshwater Fireball Pearl Wire Earrings

anchovy

Stellar Necklace with Baroque Pearl with 14K Yellow Gold chain

Anchovy

Twin Necklace with Biwa Pearl and Baroque Pearl, and Gold Filled Chain

Anchovy

Freshwater Pearl Cluster Necklace with Colombian Emerald

Anchovy

Comet Bracelet with Large Freshwater Fireball Pearl

Anchovy

Berry Earrings with Black and White Freshwater Pearls

Anchovy

Comet Thread Earrings with Large White Freshwater Fireball Pearls

Anchovy

Large Purple Freshwater Fireball Pearl Thread Earrings with

Anchovy

Purple Freshwater Fireball Pearl earings

Anchovy

Twin Earrings with White Feather Pearls

Anchovy

Comet Chain Necklace No2

Anchovy

Comet Necklace with Firetail Pearl Gold-filled Chain

Anchovy

Planet Necklace With White Freshwater Baroque Pearl

Anchovy

Comet Pearl Natural Necklace With Large Firetail Freshwater Pearl

Anchovy

Comet Pearl Necklace With Large Firetail Freshwater Pearl

Anchovy

Twin Earrings Short

Anchovy

Rice Earrings With Two Freshwater Rice Pearls In White Color

Anchovy

Planet Earrings

Anchovy

Rosebud Stud Earrings With Rare Freshwater Rosebud Pearls

Anchovy

Keshi Chain Bracelet

Anchovy

Octopus Bracelet With 4 Freshwater Pearls

Anchovy

Heart Pearl Bracelet With Rare Freshwater Heart Shape Pearl

Anchovy

Cosmic Worm Bracelet

Anchovy

Ball Earrings with Large Metallic Baroque Pearls and Silver Wires

Anchovy

Twin Chain Bracelet with Small Heart Pearls

Anchovy

Small Keshi Pearl Gold-filled Post Earrings

Anchovy

Pearl Cluster Earrings with Freshwater Pearls in White Color

Anchovy

Heart Earrings with Small Rare Freshwater Heart Pearls

Anchovy

Heart Chain Thread Earrings with Rare Freshwater Heart Pearls

Anchovy

Triangle Earrings with White Freshwater Teardrop Pearls

Anchovy