Gold is a precious metal known for its bright yellow color and malleability. It has been used for thousands of years in jewelry, coins, and as a form of currency. Gold is valued for its rarity and resistance to tarnish, making it a popular choice for both decorative and investment purposes. Diamonds are precious gemstones formed deep within the Earth under high pressure and temperature. They are primarily composed of carbon and are renowned for their brilliance and hardness. Diamonds are often used in jewelry, particularly in engagement rings, and are graded based on their cut, color, clarity, and carat weight, known as the Four Cs.