Natural Treasure

What Is Sardonyx? Geological Marvel in Stripes Sardonyx is a banded variety of chalcedony (microcrystalline quartz, SiO₂), distinguished...

What Is Sapphire? The Science of a Cosmic Gem Sapphire is a crystalline form of aluminium oxide...

What Is Zircon? Beyond the Diamond Imitator Zircon (zirconium silicate, ZrSiO₄) is a resilient nesosilicate mineral that forms...

What Is Ruby? The Science of a Scarlet Treasure Ruby, a variety of the mineral corundum (Al₂O₃),...

What Is Emerald? Geological Marvel & Symbol of Rebirth Emerald, a chromium-vanadium-rich variety of beryl (Be₃Al₂Si₆O₁₈), owes...

What Is Peridot? The Volcanic Gem of Earth and Space Peridot (also known as Olivine) is a...