Simplicity and elegance lend to a traditional style three stone pendant that incorporates round diamond faceted pink, yellow and blue sapphires. Each sapphire measures 4.0 mm and weighs approximately 0.25 carats. The sapphires were selected for their rich even color, excellent clarity and expert diamond cut faceting which provides extra facets for colored stones to maximize brilliance. All stones originate from Sri Lanka and are prong set in the bar drop style pendant made of 14K white gold. The pendant measures 31 mm or 1.25 " in length and the bail has an opening that can accommodate up to a 3.75 mm chain/clasp. This magnificent piece is offered 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.