
Opal - Wikipedia
Opal is a hydrated amorphous form of silica (SiO 2 · n H 2 O); its water content may range from 3% to 21% by weight, but is usually between 6% and 10%. Due to the amorphous (chemical) …
Opal Gems: Value, Price, and Jewelry Information - IGS
Sep 15, 2024 · Opal Stone Facts and Information. For thousands of years, people have mined and treasured opals. These striking stones are the traditional October birthstone and have …
Opal Stone: Meanings, Properties and Uses - The Complete Guide
Apr 11, 2019 · Opal is a stone of balance and can help you regulate and balance your emotions and moods, especially if your mood changes are due to mental health or hormonal issues. It is …
14 Different Types Of Opal And What They All Look Like - Rock …
Mar 5, 2025 · Opal is a fascinating mineral known for its unique play of colors and diversity. There are many types of opal, each with distinct characteristics that make them special. For …
Opal Gemstone | Opal Stone - GIA
Opal is an October birthstone. Grids of silica spheres 0.2 microns in size create red play-of-color flashes. Opal contains up to 20% water trapped in its silica structure. The novel “ Anne of …
Pictures of Opal - Black, Fire, Boulder, Blue and Pink - Geology.com
Opal is one of the world's most popular gemstones and the birthstone for the month of October. A nice precious opal can flash every color of the spectrum with an intensity and quality of color …
Opal (Common) Gem Guide and Properties Chart - Gemstones.com
This Opal (Common) gemstone guide lists qualities of the Opal (Common) gem type, including stone colors, common names, meanings, gemstone hardness and more.
Opal Stone Meaning, Uses, Properties, Value, & More - Gem …
Aug 11, 2021 · Opal gemstones are hydrated silica crystals that form over millions of years. Learn about opal details, including stone meanings and symbolism, history, pricing, and value.
10 Different Types of Opal (With Pictures) - Rock Seeker
Mar 22, 2023 · There are many different kinds of opal out there, far more than most people realize. Each has its own individual charm, whether it’s the colorful common opal found in the …
The Price And Value Of Opal In 2025 (Experts Weigh In) - Rock …
Opal is a gemstone composed primarily of silica and water, known for their striking iridescence and color play. These unique and captivating stones are formed when silica-rich water seeps …