7013.10 - Of glass-ceramics:

HTS code 7013.10 specifically classifies glassware of a kind used for table, kitchen, toilet, office, indoor decoration, or similar purposes, with a key defining characteristic: it is manufactured from glass-ceramics. This material distinguishes it from other glassware within heading 7013, which are primarily composed of conventional glass. Unlike its siblings which cover various types of drinking glasses and other kitchenware made from non-glass-ceramic materials, this category exclusively addresses items fabricated from fused silica or other glass-ceramic compounds.

The subcategories within 7013.10 provide further detail for classifying these glass-ceramic items. Subcategory 7013.10.10.00 offers a highly specific classification for kitchenware that meets stringent criteria regarding its composition (lithium aluminosilicate with a β-quartz solid solution phase), physical properties (low thermal expansion, transparency, haze-free, specific infrared transmittance), and crystalline structure. All other glass-ceramic articles falling under heading 7013.10 that do not meet these precise specifications are categorized under the broader residual subheading 7013.10.50.00.