Opal

Opals are a form of hydrated silicon dioxide formed by a combination of water and silica. In fact, opal stones consist of 3-10% water. Their unique properties are due to the way the microscopic silica spheres are arranged in the stone. The arrangement creates the remarkable play of colors that characterizes opals. Opals are found in various parts of the world, but Australia is the largest source, supplying over 90% of the world's finest opals. The stone is considered Australia's national stone.

There are countless variations of opals, but the most common types are black opal, white opal, crystal opal, boulder opal, and matrix opal. The play of colors in opals varies from shades of red, blue, green, orange, and yellow, and some opals display a range of different colors that change depending on the angle they are viewed from.

Opal stones are known for their symbolism and meaning in various cultures. They are considered the stone of inspiration and creativity and are believed to promote self-confidence and freedom of expression. Historically, opal was also regarded as a protector against evil and to bring luck, health, and prosperity to the wearer.

To preserve the beauty and longevity of opal jewelry, it is important to take certain precautions. Avoid sudden temperature changes, as opal tends to dry out. This can cause cracks in the stone and damage its beautiful appearance. Also avoid contact with chemicals found in perfume, hairspray, cream, etc. Store opal jewelry in a dry, cool, and dark place when not in use, and clean them gently with a soft cloth as needed.

The value and quality of the opal stone are determined by a combination of factors, including color, play of color, pattern, clarity, carat weight, and rarity. Strong and vibrant colors are more valued, especially black opal, which is rare and has an intense play of color. Play of color refers to patterns and colors that appear when the opal is moved or illuminated, and a complex play of color increases the value. Unique patterns like "harlequin" are particularly sought after. Additionally, clarity is an important factor for opals, as is the size of the stone measured in carats. Both factors have a significant impact on the value of an opal stone. Rare types of opal such as black opal and high-quality boulder opal are more valuable due to their rarity.