Appearance The color of fine-quality alexandrite changes from green to bluish-green in daylight (high color temperature, relatively blue illumination) to red to purplish-red under incandescent light (high color temperature, relatively yellow illumination). Fine-color material is relatively rare, though. Geographical Distribution The countries of Madagascar, Brazil, East Africa, Russia, and Sri Lanka have the biggest amounts […]
Appearance Albite is mostly colorless but can occasionally be reddish, pink, yellow, or gray. Sometimes green tinted translucent albite is caused by chromium jadeite. It is a part of trapiche emeralds as well. There are occasionally rare instances of translucent albite with bright green inclusions of jadeite high in chromium. Geographical Distribution Several nations worldwide,
Appearance An agate’s typical appearance is described as curved, angular layers or banding, but it can also resemble moss or a plume. Because of their microcrystalline structure, bands can have a variety of translucency and an extremely tiny grain or fibrous structure. Sometimes agate is colored. Geographical Distribution Agate can occur in a range of geological
Appearance Adularia is a potassium aluminosilicate (KAlSi3O8) and a feldspar mineral. It frequently crystallizes as colorless, glassy, prismatic, twinned crystals in crystalline schist cavities and low-temperature felsic plutonic rock veins. Some examples of this type of phenomenon are the Alps schists. Adularia that exhibit an opalescent color display are referred to as moonstones. Geographical Distribution
Appearance Actinolite is a transparent gemstone that ranges in color from green to black and can occasionally exhibit a “cat’s eye” look. Like tremolite, this fibrous amphibole mineral frequently crystallizes into glassy, flattened prisms. Geographical Distribution Actinolite can be found in the following locations: Norway: From Zermatt in the Swiss canton of Valais. At Arendal
Physical Properties One kind of single-shelled, herbivorous sea mollusc (gastropod) is the abalone. Their big, fleshy body is paired with a muscular, broad foot that it uses to suction itself to rocks or reefs. Abalone species are shielded from wave movement by their rough, flat, and ear-shaped shells. Geographical Distribution Small specimens of abalone are usually