To provide a fiber giving high light reflection to a woven fabric regardless of a weaving method without lowering the light reflection in dark place by wearing.

This brilliant fiber comprises a synthetic resin and powder of a brilliant substance. This brilliant blended fiber is obtained by blending the above brilliant fiber with other fiber. This brilliant twist yarn is obtained by twisting either one kind of brilliant fibers and brilliant blended fibers or twisting either one kind of brilliant fibers and brilliant blended fiber with other spun yarn. This knitted fabric, this woven fabric, this braid, this nonwoven fabric, this fabric product and this leather product are each obtained by using either one of brilliant fibers, brilliant blended fibers and brilliant twist yarn. This method for producing the brilliant fiber comprises mixing a melt of the synthetic resin with powder of brilliant substance and spinning the mixture.