5 Rare Gemstones on EarthGemstones are said to be one of the earth’s prettiest treasures. People all over the world have appreciated them for their beauty and rarity throughout history. They are commonly used as decorative ornaments and for their religious value. Gemstones have always been respected for their healing powers too. All gemstones are found raw and beautiful but when gemstone suppliers like KGK Group present diamond, ruby, or sapphire, these gemstones possess a distinct beauty and become special in their way.