Yes, Mexicos Terracotta Onyx can be used in a kitchen. Terracotta Onyx is a durable and heat-resistant stone, making it suitable for kitchen countertops, backsplashes, or even flooring. However, its important to note that onyx, in general, is more porous and softer than other natural stone materials, such as granite or quartz. Therefore, it may require regular sealing to prevent staining and damage from acidic substances commonly found in a kitchen. Additionally, onyx should be handled with care to avoid scratching or chipping.