1. Red Diamond: The jewel of the crown, featuring an intense and hypnotic red. Its extreme rarity puts it at the top of the list of the most precious stones, with exorbitant prices that can exceed $2 million per carat.2. Imperial Jadeite: A lush and translucent green defines this stone, revered in Eastern culture for its beauty and spiritual significance. Found in Myanmar, imperial jadeite can reach exorbitant values, such as $3 million per carat.3. Serendibite: A celestial blue stone, so rare that only a few known specimens exist in the world. Its accidental discovery in Sri Lanka in 1902 made it a fascinating riddle for geologists and collectors, with prices ranging from $1.8 million per carat.4. Grandidierite: A triplely coveted jewel for its rarity, beauty and unique optical properties. Its vibrant blue with shades of green and purple makes it unparalleled, and its value can reach $50,000 per carat.5. Blue Diamond: Enveloped in mystery and heavenly beauty, the blue diamond is one of the rarest in nature. A remarkable example is the Hope Diamond6. Ruby: The stone of passion, featuring an intense and burning red. Its rarity and beauty put it among the most coveted gems, with prices that can exceed $1 million7. Emerald: The green jewel of hope, symbol of prosperity and abundance. Its vibrant green color and intense brightness make it an extremely desirable stone, with values that can reach up to $300,0008. Sapphire: The stone of wisdom, available in various colors, the blue being the most coveted. Its beauty and rarity place it among the most valuable gems, with prices that can reach $17.3 million per carat, as in the case of the Blue Belle of Asia.9. Black Opal: A unique stone with an iridescent color game that enchants and fascinates. Its volcanic origin and rarity make it special, with prices that can reach up to $100,00010. Tanzanite: A vibrant blue stone, discovered only in Tanzania in 1967. Its beauty and rarity quickly made it coveted, with prices that can reach $12,000