Portoro (ESQ5002) is an engineered quartz surface from E Stone Surfaces' Quartz Stone collection — deep black stone with fine gold and grey veining throughout surface. Supplied as polished slabs at a nominal 3000 × 1400 mm and 15 mm thickness, suited to kitchen worktops, island counters, vanity tops and interior surface fabrication. E Stone Surfaces is a Malaysian quartz-surface specialist offering integrated-sink fabrication and custom edge profiling. Brand products are GREENGUARD-certified for low chemical emissions and NSF-certified as safe for food preparation.