3824.99.11.00 - In the form of ingots

This HTS category, 3824.99.11.00, specifically addresses cultured crystals when they are presented in the form of ingots and weigh not less than 2.5 grams each. These are synthetic crystals, manufactured through controlled processes rather than being naturally occurring. The "ingot" form signifies a cast, solid mass of the crystal material, typically prior to further shaping or processing. This classification is applicable to various types of cultured crystals used in industrial applications, scientific research, or as components in further manufacturing processes, provided they meet the specified weight and form criteria.

The distinction from its sibling category, 3824.99.19.00, which covers "Other" cultured crystals not meeting the ingot criteria, is crucial. While both fall under the broader umbrella of cultured crystals, this specific subheading demands the physical form of an ingot. Therefore, if the cultured crystal is presented in a different form, such as a rough boule, a finished component, or a powder, it would likely be classified under the "Other" subheading, provided it still meets the general requirements of being a cultured crystal weighing 2.5 grams or more.

As this is a leaf node within the HTS structure, there are no further subcategories to explore under 3824.99.11.00. The classification is therefore definitive for cultured crystals in ingot form meeting the specified weight. Importers and exporters should meticulously verify both the nature of the product as a cultured crystal and its physical presentation as an ingot, alongside the individual weight requirement, to ensure accurate classification within this specific subheading.