The term describes natural turquoise that has undergone a treatment process to enhance its durability and color. The treatment typically involves impregnating the porous stone with a resin or polymer, effectively filling in any cracks or voids. This process increases the stone’s hardness, reduces its susceptibility to damage, and deepens or enhances its color, often resulting in a more vibrant and consistent appearance. Examples of materials used include acrylic resins and epoxy.
This enhancement is crucial because natural turquoise can be quite soft and prone to cracking or fading, especially when exposed to oils, sunlight, or chemicals. The stabilization process makes the gemstone more suitable for jewelry making and other applications, allowing for a wider range of designs and increased longevity. Historically, techniques to improve the gemstone’s qualities have been employed for centuries, although modern methods offer greater consistency and effectiveness.