The Bow Tie Effect in Oval Diamonds
Simply put, a bow tie in an oval diamond looks like a man’s dark bow tie sitting in the center of the stone. It occurs when center facets of the stones obscure light reflection. These black patches in an oval stone aren’t all bad, however. Some bow tie effect will be present in any fancy-cut stone, but the severity of the bow tie is determined but the stone’s cut.
Why Do Diamonds Come in Different Colors?
Colored diamonds can occur naturally, but they can also be the result of lab irradiation (i.e. cooking the stones). If you’re in the market for a colored diamond, it’s important to know the difference between the two since the source of the stone’s color may affect its value.