In terms of which is better, rosewood and sandalwood both have unique qualities that make them valuable. However, rosewood generally surpasses sandalwood in terms of rarity, durability, and aesthetic appeal.

Rosewood is prized for its rich, dark red to brown color, fine grain, and exceptional durability. It is highly sought after for high-end furniture, musical instruments, and decorative items. The rarity of rosewood, particularly species like Brazilian rosewood and Madagascar rosewood, has led to strict regulations and conservation efforts due to overharvesting. This scarcity adds to its value and makes it a more exclusive choice.

Sandalwood, on the other hand, is known for its sweet, aromatic scent and soft, creamy texture. It is commonly used in perfumery, incense, and traditional medicine. Sandalwood oil is highly prized for its therapeutic properties and is used in aromatherapy and skincare products. However, sandalwood is also endangered due to overharvesting, particularly in India and Australia.

Data from the International Union for Conservation of Nature (IUCN) lists both rosewood and sandalwood species as endangered or critically endangered. The demand for these woods has led to illegal logging and trade, which further threatens their survival. In terms of sustainability, rosewood is at a higher risk due to its stricter regulations and the difficulty in controlling its trade.

In conclusion, while both rosewood and sandalwood have their merits, rosewood is generally considered better due to its rarity, durability, and aesthetic appeal. However, it is crucial to prioritize sustainability and support legal, sustainable sources of these woods to ensure their preservation for future generations.