Rauten Rose is a trade term for a flatback stone with a diamond pattern on top. In glass it may be fire polished or machine out. As these are acrylic, it is molded. These are put together doublet-style which accounts for their depth and iridescence. They are truly gorgeous, look like glass when set. And you just can't beat this price. Measure 18 x 13mm. Opal Rose. Sold by the piece.