Instead of trying to conceal a seam, why not make the island countertop a standout feature by mixing and matching different materials?For instance, you could contrast 10 feet of quartz with a wooden breakfast bar or butcher block at one end of the island.Another option is to increase the island’s surface area by wrapping a corner with a contrasting material. This extends the island outward and creates a lower seating counter.Similarly, if you wanted to extend the island down the length of a room, consider dropping from counter height to table height at the end. This could be in a different color or material from the main countertop, adding a unique touch to your kitchen design.