2021 in Review: A look back at the main news events of the year

2021: A Year in Review

Así ha sido 2021 | RESUMEN DE 2021: Un año de fenómenos extremos y pandemia persistente | RTVE

💎 Sapphire: The Rainbow Gemstone of Corundum 🔵 1. What Exactly Is Sapphire? Sapphire is a precious variety of corundum, a crystalline form of aluminum oxide — Al₂O₃. But here’s the fascinating part: ❤️ Red corundum = Ruby 💎 All other gem-quality colors of corundum = Sapphire That means sapphire isn't only blue! 💛 Yellow 💚 Green 🩷 Pink 🟣 Purple & violet 🧡 Orange ⚪ Colorless 🔵 Blue And some sapphires can even show multiple colors or color zoning within the same crystal. 🧪 2. What Gives S

What does it actually mean when a sapphire has been heated? Heat treatment has been used in the gemstone world for generations to improve the colour and clarity of natural sapphires. A heated sapphire is still a natural sapphire — the treatment simply enhances characteristics already present within the stone. An unheated sapphire has not undergone this treatment, and fine examples can command a premium because of their rarity. But can you tell a heated sapphire from an unheated sapphire just by

Natural Pukhraj Ring Making Process 💎👑 #yellowsapphirering #shortvideo #goldring #pukhrajstone