7104.21.00.00 - Diamonds

This HTS category, 7104.21.00.00, specifically covers diamonds that are synthetic or reconstructed. This includes diamonds that have been created in a laboratory or are formed from fragments of natural diamonds, but are not yet incorporated into jewelry or other articles. The key characteristic is that these diamonds, while possessing the chemical and physical properties of natural diamonds, are man-made or reassembled. They may be worked to a certain degree, such as cut or polished, or they might be simply sawn or roughly shaped for ease of processing.

The distinction of this category lies in its specificity to diamonds. Its sibling category, 7104.29.00.00, covers "Other" synthetic or reconstructed precious or semiprecious stones. Therefore, if a gemstone is synthetic or reconstructed and falls under heading 7104, but is not a diamond, it would be classified under 7104.29.00.00. This section focuses exclusively on the classification of man-made diamonds within the broader scope of synthetic or reconstructed gemstones.

As a leaf node, this category does not have further subcategories. Classification ends here for unworked or simply sawn or roughly shaped synthetic or reconstructed diamonds, provided they are not strung, mounted, or set. The classification criteria at this level focus on the material (diamond) and its origin (synthetic or reconstructed), along with its initial state of work or lack thereof, before any assembly into finished products.