Septarian Calcareous Stone Slabs
Septarian nodules processed into rectangular calcareous stone slabs for decorative building elements, with specific gravity 2.5+. This unique patterned stone fits HTS 2515.20.00.00 as other calcareous monumental stone.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If primarily mineral earth colors or chlorites
2530 covers mixed earth minerals; composition dictates.
If containing precious opal nodules
Chapter exclusion sends precious stones to Chapter 71.
Not sure which classification is right?
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Import Tips & Compliance
• XRF analysis to confirm dominant calcareous composition over other minerals
• Pattern consistency declaration prevents disputes over uniformity
• Handle fragile nodules carefully to avoid breakage reclassification
Related Products under HTS 2515.20.00.00
Alabaster Blocks
Roughly trimmed alabaster blocks cut into rectangular shapes for monumental or building use, with an apparent specific gravity of 2.5 or more. This calcareous stone is prized for its fine grain and ability to take a high polish, commonly used in sculptures and decorative architecture. Classified under HTS 2515.20.00.00 as unworked alabaster suitable for further processing into finished products.
Travertine Slabs
Calcareous travertine stone slabs, roughly sawn into rectangular blocks for building facades and monumental works, meeting the 2.5+ specific gravity requirement. Though often associated with marble headings, these 'other' calcareous stones are used in flooring and cladding. Fits HTS 2515.20.00.00 when not qualifying as marble.
Oolitic Limestone Blocks
Oolitic limestone, a calcareous building stone composed of spherical calcite grains, cut into rectangular slabs for construction and monuments. With specific gravity over 2.5, it's used in historic restoration projects. HTS 2515.20.00.00 covers this as 'other' calcareous stone, roughly trimmed.
Tufa Stone Slabs
Porous calcareous tufa stone slabs, naturally deposited and sawn into rectangular blocks for ornamental building stone. Exhibits specific gravity ≥2.5, used in garden walls and facades. Qualifies under HTS 2515.20.00.00 as other calcareous monumental stone.
Calcareous Tuff Blocks
Calcareous tuff, a volcanic calcareous stone, roughly cut into rectangular blocks for monumental sculptures and construction. Meets density criteria for heading 2515 with specific gravity 2.5+. HTS 2515.20.00.00 applies to this other calcareous building stone.
Lithographic Limestone Slabs
Fine-grained lithographic limestone slabs, a dense calcareous stone sawn rectangular for building and potential printing use. Specific gravity exceeds 2.5, classifying as other calcareous monumental stone under HTS 2515.20.00.00.