blue sapphire - Blauer Saphir

Blue Sapphire, also known as the "azure seducer," is a precious gemstone that captivates hearts with its deep blue hue and unique material properties. This gem is a member of the corundum family and is highly esteemed for its hardness, color, and rarity. HARDNESS Blue Sapphire ranks among the hardest natural materials, with a Mohs hardness of 9 on a scale of 1 to 10. This makes it extremely resistant to scratches and wear. REFRACTIVE INDEX Blue Sapphire typically has a refractive index of approximately 1.76 to 1.78, contributing to its breathtaking brilliance. This gem has the ability to refract and reflect light in a magical way. MATERIAL COMPOSITION Blue Sapphire is composed of aluminum oxide with traces of iron and titanium. Its color is primarily influenced by trace elements such as iron and chromium. SPECIAL CHARACTERISTICS Blue Sapphire is allochromatic, meaning its color is determined by foreign atoms. This results in an astonishing variety of blue shades, from delicate sky blue to deep royal blue. CHEMISTRY The chemical formula of Blue Sapphire is Al2O3, corresponding to aluminum oxide. This simple molecule conceals its impressive beauty and rarity. CARRÉ AND CARAT Blue Sapphire is often presented in various cuts, including the Carré cut. The weight of a sapphire is measured in carats, with larger stones being rarer and more valuable. ALLOCHROMATIC As mentioned, Blue Sapphire is allochromatic, meaning it can exhibit different colors due to impurities. DENDRITES Some Blue Sapphires may contain dendrites, branched natural inclusions that make the interior of the gem even more fascinating. DENSITY The density of Blue Sapphire typically ranges from about 3.99 to 4.00 g/cm³, indicating the high concentration of aluminum oxide in the gem. DICHROISM AND BIREFRINGENCE Blue Sapphire often displays dichroism, meaning it exhibits two different colors depending on the angle of observation. This effect is due to its crystalline structure. FLUORESCENCE Some Blue Sapphires fluoresce under UV light, giving them a mysterious glow. Blue Sapphire is a symbol of elegance and luxury, captivating the senses with its timeless beauty and unique material properties. It's no wonder that this gemstone has been winning the hearts of jewelry enthusiasts around the world for centuries.