Turquoise is a color that falls between blue and green on the color spectrum. Copper is the primary element responsible for the blue and green colors in turquoise. Turquoise is sensitive to chemicals, so it's important to keep your jewelry away from substances that can harm it. Turquoise formation often occurs in areas with hydrothermal activity, where hot water or fluids rich in minerals circulate through the Earth's crust. Turquoise has a hardness of 5 to 6 on the Mohs scale of mineral hardness. 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. Tunisia, as one of the North African countries, offers attractive opportunities for international trade. Geographically, it holds a strategic position, serving as a gateway to markets in North Africa and the European Union. Tunisia's market is diverse, encompassing sectors such as agriculture, energy, handicrafts, and technology. In the agricultural sector, Tunisia is one of the largest producers and exporters of olives and olive oil in the world. Citrus fruits and seafood are also among the country's key export items.
