Named for the Topasos Island in the Red Sea, true topaz is a hard, translucent semiprecious gemstone. Impurities in the stone create several color variations, including blue, pink, yellow, green and red. Although one of the harder semiprecious stones, topaz is very brittle, and must be cleaned correctly to prevent cracking and breaking. Correctly clean and store your topaz and gold jewelry at home to prevent scratches and imperfections on the stone and metal.
Create a solution of 1 cup lukewarm water and 1 teaspoon mild dish soap. Stir the water to incorporate the soap. Mild dish soap contains no dyes or perfumes.
Dampen a soft-bristled toothbrush with the soapy water and gently scrub the gold and back of the topaz setting. Pay attention to any nooks or crannies because this is where lotion, body oils and gunk might accumulate.
Rinse the gold and topaz piece under a cool tap until all the soapy residue is eliminated. Examine the piece and gently scrub off any gunk or grime you missed with the dampened toothbrush. Rinse the piece again under the tap.
Dampen the corner of a washcloth with the soapy water and gently wipe off the surface of the topaz. Dampen a different corner of the washcloth with plain water and use it to wipe away the soapy residue from the semiprecious stone.
Dab at the gold and topaz with a soft cloth to dry. Gently work the cloth in a circular motion while drying to restore the gold's shine, if desired. Lay the piece on a washcloth to air dry.