Store each topaz gemstone separately to prevent them from scratching each other or other gemstones. Blue topaz is one of the most popular varieties of topaz. Color is one of the most important factors in determining the quality of topaz. Brazil is one of the largest producers of topaz in the world. Irradiation is a common treatment used to change or enhance the color of topaz. West Asia is geologically diverse, with a wide range of rock formations, mineral deposits, and tectonic activities. The Middle East, particularly Iran, is known for producing some of the world's finest turquoise gemstones. Look for well-known and reputable gemstone retailers, either online or physical stores, that specialize in selling gemstones. The color of a ruby is one of the most important factors in determining its quality and suitability for jewelry. Color is one of the most important factors in determining the value of emeralds. Sudan is a country located in northeastern Africa. The capital of Sudan is Khartoum. The currency of this country is the Sudanese pound and is known by the code SND. The official language of Sudan is Arabic and most of its people speak Arabic. Darfuri, Nubian, English and other local languages are also used in some areas of Sudan. Sudan is a country with a diverse economy based on natural resources, agriculture, mining, oil and several influential industries. The products that Sudanese businessmen import and export to other countries include agricultural products such as grains, petroleum products, hides and skin products, mineral products, clothing and textile products, chemical and industrial products, and other products.
