3x4mm Emerald Ruby Red Color SI Clarity Faceted Cut

This is a 0.31 carat ruby from Thailand with an emerald cut and red color. The stone has SI clarity and has undergone heat treatment, a standard practice for rubies that improves color saturation and clarity. The stone is loose and unset. The emerald cut presents the color across a relatively large table facet, which is characteristic of this step-cut style.