Nish on Instagram: "Two different polishing laps — two different purposes 💎 In gemstone polishing, every lap changes the final result. 🔸 Copper Lap Holds diamond compound very well and produces a high mirror polish. Ideal for hard stones like sapphire and spinel, where brilliance and surface finish matter most. 🔹 Tin Lap More forgiving and controlled. Helps achieve a clean polish while protecting weight — important when every carat counts. Choosing the right lap is part of true craftsmanship.