Splendor 12 ply Silk Home / Threads / Rainbow Gallery / Splendor 12 ply Silk 12ply silk thread. Use 3-4 ply on 18ct, 5-6 ply on 13ct when working in basketweave. Load as you scroll too slow? Try the "View All Products" tab!Load As You ScrollView All ProductsView More... Click to Load ALL - this will take several seconds.