Quartz is an engineered material that allows for very tight, professional seams when cut with precision water-jet or bridge saws. In dark-colored slabs, the contrast between the color of the slab and the adhesive can make seams more apparent if not properly color-matched. Professional fabricators use high-quality, UV-stable, color-matched epoxy to create a smooth, nearly imperceptible joint. However, because light interacts differently with the edge of the slab than the top surface, some visibility is normal. Always ask your fabricator about their seam-matching process and request to see a test joint if you have concerns about the aesthetic outcome in your specific color.
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What should I know about seam visibility with dark-colored quartz slabs?
Seam visibility in dark-colored quartz depends on the quality of the fabrication and the matching of the resin-based adhesive. Because quartz is non-porous, the seam must be filled with a color-matched epoxy that mimics the slab's appearance. While seams can never be made completely invisible, a skilled fabricator can make them tight and color-coordinated to minimize their presence. Always view a sample seam if possible.