| Classic Blue | Medium to deep blue background with broad white or pale-gray movement and moderate variation. | Natural quartzite dominated by quartz, with feldspar and other accessory minerals creating blue, gray, and white patterns. Color and veining vary from block to block. | Usually available in approximately 2 cm and 3 cm slabs. Typical commercial slab sizes are about 270–330 cm long and 150–210 cm wide, subject to quarry yield. | Kitchen islands, vanity tops, feature walls, fireplace surrounds, reception counters, and low-to-medium traffic interior surfaces. | US$140–260 | Medium More consistent than highly selected grades, but natural variation remains significant. | Request current block and slab photographs, slab numbers, quarry origin, thickness measurements, resin-treatment disclosure, and a signed commercial packing list. |
| Extra Blue | Stronger saturated blue tones with high visual contrast and more dramatic movement than standard grades. | Higher-value selection based mainly on color intensity, pattern continuity, and overall visual impact rather than a separate mineral species. | Commonly supplied in 2 cm or 3 cm slabs. Bookmatched pairs may be available when slabs are cut from the same block. | Luxury residential interiors, statement islands, hotel lobbies, premium wall panels, and carefully protected bathroom surfaces. | US$220–420 | Limited Strong color and large continuous patterns reduce the usable yield of many blocks. | Verify that all selected slabs come from the same block, compare dry and wet photographs, inspect the back of each slab, and approve a physical sample before production. |
| Blue with Gold or Brown Veining | Blue base with warm gold, tan, rust, or brown veins and mineral accents. | Warm-colored mineral inclusions and veins are natural features. Their continuity, density, and direction can change substantially across one slab. | Generally offered in 2 cm and 3 cm thicknesses. Large-format slabs require careful inspection for internal fissures and edge stability. | Feature islands, bookmatched walls, fireplace panels, boutique hospitality interiors, and decorative furniture tops. | US$180–360 | Medium to Limited Premium pricing is usually driven by balanced color distribution and attractive vein placement. | Confirm whether veins are open fissures or naturally filled features, request resin and reinforcement details, and use an approved fabricator for cutting and installation. |
| White-Blue Contrast | Light blue, gray, or white field with pronounced blue ribbons, clouds, or linear movement. | Visual contrast is created by variations in mineral composition and crystal structure. It is a natural stone pattern, not a printed or engineered finish. | Most frequently available in 2 cm and 3 cm slabs. Slab matching should be planned before fabrication because adjacent pieces may not mirror one another. | Bright contemporary kitchens, bathroom vanities, wall cladding, counters, and commercial reception areas with moderate use. | US$150–300 | Medium Often easier to source than the deepest blue selections, but exact pattern matching is not guaranteed. | Request a full-slab digital layout, confirm the acceptable color range in writing, check calibration and surface flatness, and review the inspection standard before shipment. |
| Highly Veined or Dramatic Movement | Large-scale sweeping veins, waves, clouds, or strongly directional movement across the slab. | Natural structural and mineral variation can create striking patterns. Some visible lines may require filling or reinforcement and should not automatically be treated as defects. | Usually selected in 3 cm for demanding countertop work, although 2 cm is also available for supported applications and wall panels. | Bookmatched feature walls, large islands, luxury bathrooms, fireplace surrounds, and showcase commercial interiors. | US$200–450+ | Limited Large uninterrupted patterns are difficult to obtain and may produce higher cutting waste. | Approve slab-by-slab photos with dimensions, identify all filled or reinforced areas, require a fabrication drawing, and confirm breakage responsibility and replacement terms. |
| Commercial Select Grade | Blue-gray appearance with moderate movement, minor natural inclusions, and a practical balance between appearance and yield. | Natural quartzite selected for usable dimensions and acceptable visual consistency rather than maximum color saturation or pattern drama. | Typically supplied in standard 2 cm or 3 cm thickness. Smaller slabs or bundles may offer better yield for vanity and medium-size projects. | Multi-unit residential projects, standard kitchens, bathroom programs, hospitality counters, and interior wall applications. | US$110–210 | Relatively Better Usually offers the best balance of budget, availability, and usable slab area. | Confirm the exact grade definition, acceptable natural features, average usable area, bundle quantity, moisture protection, and packaging method. |
| Bookmatched Premium Selection | Two or more slabs arranged as a mirrored visual composition, emphasizing continuous veins and movement. | Bookmatching is a cutting and slab-selection method, not a separate geological type. Matching quality depends on block orientation and slab sequence. | Usually selected in 3 cm for visual stability and fabrication flexibility. The total panel size depends on the original block and cutting plan. | Feature walls, oversized islands, lobby panels, fireplace surrounds, luxury bathroom walls, and other focal installations. | US$280–550+ | Very Limited Price includes selection, matching, additional handling, and higher risk of waste during fabrication. | Require sequential slab numbers, a full bookmatch layout, exact dimensions, high-resolution images taken under consistent lighting, and written approval of the final composition. |