Ebony is generally more expensive than rosewood. This is due to several factors, including rarity, demand, and the challenges associated with harvesting and processing these woods.

Ebony, known for its dark, dense, and durable wood, is highly sought after for its unique aesthetic and acoustic properties. It is used in high-end musical instruments, such as pianos and guitars, as well as in high-quality furniture and carving. The scarcity of ebony trees, which are native to tropical regions, contributes to its higher price. Additionally, the wood is difficult to harvest and process due to its hardness and density, which requires specialized tools and techniques.

Rosewood, on the other hand, is also a highly prized wood, particularly for its rich color and luster. It is used in the making of high-quality guitars, violins, and other musical instruments, as well as in furniture and decorative items. Rosewood species are found in various regions, but some are endangered, making them more expensive. The demand for rosewood has been increasing due to its popularity in musical instruments and luxury goods, which has driven up prices.

According to the International Union for Conservation of Nature (IUCN), the price of ebony has been rising steadily due to its rarity and the restrictions on its trade. For example, the price of African ebony has increased by over 50% in the past decade. Rosewood prices have also been on the rise, with the price of Brazilian rosewood increasing by over 30% in the same period.

Furthermore, the CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora) regulations have played a significant role in the pricing of these woods. CITES restrictions on the trade of rosewood species, such as Brazilian rosewood and Madagascar rosewood, have made them more expensive due to the limited availability and the legal hurdles associated with their trade.

In conclusion, ebony is generally more expensive than rosewood due to its rarity, demand, and the challenges associated with its harvesting and processing. The increasing prices of both woods are also influenced by the CITES regulations and the growing demand for high-quality musical instruments and luxury goods.