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In all the world, สายแก้ว (Saikaew , Saikaeo , สายแก้ว) is a very rare dominantly feminine, but uncommonly boy's forename. The forename สายแก้ว is habitual in South-eastern Asia, particularly Thailand, where it is a very rare dominantly girly, but seldom male name. More prevalently, สายแก้ว is the last name as well as the forename.