6907.30.10.05 - Cubes and the like, whether or not rectangular, the largest surface area of which is capable of being enclosed in a square the side of which is less than 7 cm

This HTS category encompasses unglazed ceramic mosaic cubes and similar pieces. These items are characterized by their small size, where the largest surface area of any individual piece can be enclosed within a square measuring less than 7 centimeters on each side. They are intended for use in mosaics and decorative tiling, providing a versatile building block for various artistic and architectural applications.

Within the broader category of "Mosaic cubes and the like," this specific subheading distinguishes itself by focusing solely on unglazed ceramic materials. This contrasts with other mosaic materials that may be glazed or possess different surface treatments. The "unglazed" designation is critical for accurate classification, as it points to the inherent porosity and finish of the ceramic material itself, which can impact its application and durability.

As this is a leaf node, there are no further subcategories. Therefore, classification within 6907.30.10.05 relies on the definitive criteria of being an unglazed ceramic mosaic cube or similar item meeting the specified dimensional requirements. This includes pieces that may be rectangular, square, or other geometric shapes, as long as they conform to the size limitations and are not glazed. Examples might include small ceramic tesserae used for intricate mosaic work on floors, walls, or decorative objects.