Mosaic Tiles Split Face Brick Oyster Grey QuartzMosaic Tiles Split Face Brick Oyster Grey Quartz. The Split Face Brick Oyster Grey Quartz Mosaic Tile delivers a refined natural stone surface with layered depth and tonal variation. Each sheet combines shades of soft grey and beige, producing a balanced aesthetic that suits both contemporary and traditional interiors. The split face texture adds definition and relief, making it particularly effective for feature walls and architectural detailing.