What is the most valuable geode?

The most valuable geodes are typically those containing high-quality crystals of minerals such as amethyst, citrine, or quartz. One of the most famous and valuable geodes is the "Empress of Uruguay," a massive amethyst geode that weighs over 2.5 tons and is valued at around $2.5 million. The value of a geode can also depend on its size, aesthetics, and the rarity of the minerals inside. Unique specimens with exceptional clarity or color can command significantly higher prices in the market.