This pendant showcases four princess cut sapphires including a yellow, blue and pink from Ceylon and a Thai green sapphire. Each sapphire weighs approximately 0.15 carats for a total of 0.60 carats total weight. The sapphires were selected for their fine clarity, princess cuts, brilliance and color. The pendant measures 133/4 mm in length and is made of 14K yellow gold. This magnificent piece was designed by Jill Underhill of Color Symphony (http://www.colorsymphony.com) and will be shipped directly from their location in New Hampshire.
This gemstone (or gemstone that is part of this piece of gemstone jewelry) has been enhanced by traditional heat treatment. Traditional heat treatment is used to improve a stones color, remove color zoning/banding, and improve clarity. This treatment is considered permanent. The only way to tell if a colored stone has been treated is for the stone to be analyzed by a lab. Generally only gemstone laboratories have the equipment necessary to make a qualified judgement with any certainty.
Untreated gemstones are rare and should be verified by a lab independent of the seller. A good rule of thumb is to always assume a gemstone has been enhanced, unless valid certification from a reputable laboratory is available. No one that sells jewelry or gems should be doing appraisals, certifications, or analysis. It should always be an independent third party with no vested interest in the sale.