The African ruby, primarily sourced from key African countries like Mozambique, Madagascar, and Tanzania, is one of the most sought-after types of ruby stone belonging to the corundum mineral family, principally composed of aluminum oxide (Al₂O₃). The range of vibrant red hues in original manik stones is caused by trace amounts of chromium, which distinguishes them as one of the most valuable gemstones. African rubies typically exhibit a rich color spectrum, ranging from pinkish-red to deep, pigeon-blood red, with Mozambique’s gems often rivaling the quality of Burmese rubies.
Technically, original African rubies rank 9 on the Mohs scale which makes them highly durable for jewelry. African rubies often contain inclusions like rutile silk or iron oxide, which can affect clarity but also serve as natural identifiers. These gems are commonly heat-treated to enhance color and clarity, with unheated stones commanding higher prices due to rarity. Their crystal structure is hexagonal, and they often form in metamorphic rock environments. African rubies are mined in regions like Montepuez (Mozambique) and Morogoro (Tanzania), where ethical mining practices are increasingly emphasized due to global demand for conflict-free gems. Their refractive index (1.76–1.78) and specific gravity (3.99–4.01) aid in identification. Valued for their beauty and rarity, African rubies remain a cornerstone of the global gem trade.
African yaqoot stone prices per carat are profoundly influenced by the range of core factors like origin, color, clarity, and treatment, with major sources including Mozambique, Tanzania, and Madagascar. Mozambique rubies, in particular, have gained global acclaim for their vivid red to purplish-red hues and high transparency, often rivaling the famed Burmese rubies. High-quality African rubies with intense color, minimal inclusions, and no heat treatment can command prices from $300 to over $1,500 per carat, especially in larger sizes (over 2 carats). Stones with slight inclusions or moderate color may range between $100 and $500 per carat.
Heat-treated African rubies are more common and significantly more affordable than natural African rubies. The demand for African rubies has surged in recent years due to consistent supply and exceptional gem quality, making them a dominant force in the global ruby market. As with all rubies, certification from recognized gemological laboratories is crucial to verify origin, treatment, and authenticity for accurate pricing.