The topaz stone is considered one of the most famous gemstones in the manufacture of jewelry, accessories and various ornaments. It is characterized by several characteristics, some of which are represented in the degree of its hardness, the diversity of its colors and its unique appearance that many individuals prefer, as its most valuable colors are golden and orange And yellow (called imperial topaz), in addition to the darker colors are red or reddish orange. It is worth noting that the value of the topaz stone increases with the increase in the degree of dark color such as red and orange tones. However, the most common color used in making topaz jewelry is blue topaz. It wasn’t until the last century that blue topaz became popular in jewelry markets, as almost all of these stones are radioactive and heat treated. But in view of these characteristics and the question of why that stone acquired those characteristics in particular, we will have to know how the topaz stone is formed and the geological stages it was exposed to during its formation and their merits. Whether you are curious about the origins of this stone and would like to study it, or if you are about to buy it or an amateur who wants to develop their knowledge and knowledge of gemology or even just for fun, you will find it with us here in the following lines.
The process of stone formation Topaz
Research indicates that topaz is formed through non-comparable geological processes in which it plays Hot gases play an essential role. It also forms late during the quenching process of rare-earth silica-rich clumps. These processes produce topaz as well as cassiterite, apatite, and tourmaline. Topaz is usually found as a component of pegmatite conglomerates where crystals reach gigantic sizes. In addition, it forms in the cavities of gneiss, schist and highly acidic rocks such as rhyolite. Topaz is also a common element in gravel stones due to its relative hardness and durability.
Topaz crystallizes from the fumes of fluorine Rich in the final stages of hardening of igneous rocks. It often forms in cavities of granitic rocks and lava, specifically in cavities of pegmatites and alluvial deposits. Minor assemblies of topaz have been found in streams and other alluvial sediments.
The University of Texas Department of Geological Sciences has indicated that topaz is usually associated with deposits of the element tin in gas cavities in igneous rocks. As for pegmatite cavities, topaz is usually accompanied by the elements beryl, fluorite, tourmaline and apatite. Topaz is generally formed as well-shaped prismatics of suitable hardness. Also, most natural topazes are either colorless or very pale blue. The irradiation process is followed by the heating process to produce dark blue topaz. The important topaz which is partially replaced in some cases by the hydroxyl ion (OH). Fluorine and hydroxyl are also among the materials concentrated by the crystallization of other components of silica-rich fused materials. It is possible that the fluorine content of topaz is responsible for its rather low percentage in terms of its specific gravity. In addition, most fluorine minerals are relatively low in terms of refractive index.
The radiant topaz is the most popular stone in jewelry markets. Also, particles or electromagnetic rays (ionizing radiation) have enough energy to affect the color centers of topaz stones. High-energy particles include: electrons, alpha particles, beta particles, gamma particles, and neutrons. details:
2017 Alpha particles: high-speed helium atoms with no electrons. 2017 Beta particles: high speed electrons.
Gamma rays: high-energy photons of electromagnetic radiation (similar to X-rays).
Neutrons: neutral subatomic particles.Radiation is often carried out in linear accelerators (electrons with high energy) and nuclear reactors (high energy neutrons). Nuclear reactions produce an intense blue color (which does not need secondary heat treatment).Sources of topaz stone
on Although topaz has different properties in common, it is a very common gem. It is found more commonly than other gemstones in many countries and in many types of deposits. Topaz is extracted in two basic ways, it is either a by-product of the extraction of other gemstones, or at least it is not the only substance that is sought in the mining process.
It is one of numerous minerals with precious stone quality found in the mines and rocks of Burma’s Ceylon and Mogok areas. These places are well-known for being rich in sapphire and ruby, two well-known gemstones. Topaz stone is extracted subsequently on the side of their extraction. Brazil’s abundant gemstone resources are a key source of topaz extraction. Nonetheless, it is one of the secondary miners’ goals, along with beryl. Whereas other elements, such as pegmatite, are frequently mined in addition to tungsten, columbium, and tantalum, minerals include beryllium and lithium, as well as a variety of other minerals that miners may look for.