Which animal's tusk is known for producing the most valuable ivory?

The elephant is known for producing the most valuable ivory because its tusks are large, dense, and contain a significant amount of high-quality material. Elephant ivory is highly sought after due to its beautiful appearance, workability, and historical significance in art, jewelry, and various decorative items.

Elephant ivory has a rich and varied grain, which adds to its desirability for carving and intricate designs. The legal and cultural aspects surrounding elephant ivory also contribute to its value. Despite the decline in elephant populations due to poaching, the demand for high-quality elephant ivory remains, often driving the underground market for these products.

In contrast, while walrus and hippo tusks do produce ivory, they are less valuable and not as widely used in high-end applications as elephant ivory. Boar tusks do not match the scale and quality of elephant ivory, making them far less sought after in comparison. Thus, the elephant is recognized as the primary source of valuable ivory in various markets.