When Lit Onyx Does Not Match the Approved Mock-Up<\/span><\/h2>\nFirst, photograph the entire assembly in lit and unlit states with exposure held consistent. Second, stop further panel installation, lighting adjustment, or surface treatment in the affected zone. Third, compare slab IDs, transmitted-light maps, thickness, backing, diffuser, source spacing, controls, and mock-up records with the stone and lighting teams.<\/span><\/p>\nA correction may involve controls, diffusion, source layout, cleaning, surface work, reassignment, or panel replacement. I do not choose before the evidence shows whether the difference comes from stone, treatment, fabrication, assembly, or light.<\/span><\/p>\nKeep Transmitted-Light Evidence beside the Slab Map<\/span><\/h2>\nI record natural onyx translucency<\/strong> as a range across the numbered face, not as one bright close-up. Dense bands and pale clouds need equal representation in the project file.<\/span><\/p>\n\uc744 \uc704\ud55c backlit onyx selection<\/strong>, I compare the complete lit arrangement with the unlit face. The composition must remain intentional when controls dim or the source is switched off.<\/span><\/p>\nBefore onyx slab fabrication<\/strong>, I place cut lines, joints, openings, and supports over the transmission map. This prevents a dark structural shadow from crossing the visual center by accident.<\/span><\/p>\nFrequently Asked Questions<\/span><\/h2>\n1. What are architectural onyx slabs made from?<\/span><\/h4>\nMany decorative stones sold as architectural onyx are translucent calcite- or aragonite-rich materials formed by mineral deposition. They differ from the silicate gemstone definition of onyx, so identify the actual stone and assess it for the intended use.<\/span><\/p>\n2. Can all onyx slabs be backlit?<\/span><\/h4>\nNo. Transmission varies across and between faces. Dense zones, thickness, resin, repairs, backing, mesh, supports, and the lighting assembly can limit or change the effect. Test the exact full face and proposed build-up.<\/span><\/p>\n3. What photographs are needed before buying onyx?<\/span><\/h4>\nRequest labeled full-face views in reflected light, broad transmitted-light maps, close views of fissures and repairs, reverse-side treatment, thickness measurements, edge trials, and layout overlays for the proposed application.<\/span><\/p>\n4. How should onyx slabs be selected for a backlit wall?<\/span><\/h4>\nApprove the unlit face, transmitted-light map, panel crop, bookmatch, joints, thickness, resin, backing, edge, support shadow, diffuser, source spacing, controls, service access, and the complete physical mock-up.<\/span><\/p>\n5. What should happen first if installed onyx shows hot spots or dark bands?<\/span><\/h4>\nPhotograph the full wall in lit and unlit states, stop further installation or adjustment, and compare slab maps, treatment, thickness, diffuser, supports, source layout, controls, and mock-up evidence before selecting a correction.<\/span><\/p>\n\nQuick-Reference Onyx Slab Approval Checklist<\/span><\/h3>\n\n- Photograph every numbered face in reflected light and with a broad transmitted-light source.<\/span><\/li>\n
- Map bright, medium, dense, repaired, resin-treated, backed, and fissured zones.<\/span><\/li>\n
- Overlay joints, bookmatches, openings, returns, supports, and visible edges on the light map.<\/span><\/li>\n
- Measure thickness and produce a representative edge and treatment trial.<\/span><\/li>\n
- Build the stone, joint, backing, diffuser, source, support, and controls into one mock-up.<\/span><\/li>\n
- Approve the material when lighting is on and off from normal viewing distances.<\/span><\/li>\n
- Record cleaning, service access, replacement logic, and retained reference pieces.<\/span><\/li>\n<\/ul>\n<\/section>\n