Many minerals form beautiful crystals, but the most treasured of all are gemstones. In their raw state, they often appear ordinary and are difficult to distinguish from other stones. However, after cutting, faceting, and polishing, their true colors shine through, and their value becomes fully apparent.

Of the approximately 3,800 known minerals, fewer than 100 are classified as gemstones. This classification considers various physical properties, including hardness, luster, color, and density. Additionally, rarity—much like in many other contexts—is a key factor in determining value.

> Read more about the most popular gemstones