At last! A CZ that is both beautiful and affordable. Cut in Switzerland specially for Rio Grande, these CZs will sparkle in your designs and on your bottom line.
2016 Gems and Findings & Display and Packaging Catalog p.707
please note: • This stone can usually be cast in place safely; however, the process involves a great many variables, and there is always risk of damage to the stone. For instructions and information, see Tyler Teague's article "Casting Stones in Place"; find it on the 'More Info' tab or simply search 'casting stones in place.' • Care: Wash with warm, soapy water. Avoid harsh detergents. Safe for both ultrasonic and steam cleaning.
How To Ensure Your Stone Fits Beautifully
One answer to the question of how to make sure your stone and your setting are a close match to to use machine-cut gemstones. Our machine-cut gemstones are cut to exacting tolerances and match like-sized settings precisely.
This precision is especially beneficial when channel-setting stones; each stone will fit the channel width without the need for further cutting or grinding.
These gemstones are carefully graded to match in color, so that multiple stones present the same color when set together in a channel or other multi-stone setting.
Superior Gem Cuts Contribute to Superior Designs
The simulated gemstones offered by Rio Grande are created with careful attention to detail. Our cutting and polishing processes are held to the same high-quality standards as our genuine precious stones. While other manufacturers may use substandard material and less stringent processes, you will never see either of these in the gemstones you buy from Rio. The difference is obvious to the unaided eye.
Rio Grande gemstones feature girdles that are neither too thin nor too thick so that the stones fit into your settings--custom-made or pre-fabricated--faster and more easily and are held more securely.
Their culets are precision-cut to enhance the play of light through the clarity of the stone for maximum dispersion and refraction.
Other gemstones, cut to lesser standards, can show girdles that not only may be too thin or too thick but actually vary in thickness, making the stone more difficult to set securely.
Uneven or imprecise culets interfere with the light, preventing an optimum play through the stone and creating the appearance of distortion and dullness in the stone.
How To Measure Stones
The AGTA Guide to Gemstone Treatments
Rio Grande uses these symbols, set by the American Gem Trade Association (AGTA), to disclose any enhancements that may have been applied to our gemstones. For the benefit of your company and your customers, Rio Grande encourages you to use these symbols when you buy, display and sell stones and stone-set jewelry.
Assembled from multiple layers or combinations of manufactured and/or natural material fused, bonded or otherwise joined together to increase stability and/or imitate the appearance of a natural gemstone, create a unique design or generate unusual color combinations. Example: Opal triplets
Bleached using heat, light and/or other agents to lighten or remove color.
Coating on the surface with such enhancements as lacquering, enameling, inking, foiling or sputtering of films to improve appearance, provide color or add other special effects.
Dyed by the introduction of coloring matter to give a new color, intensify present color or improve color uniformity.
When used to describe turquoise, an electrochemical treatment to improve color. No resins or dyes are used.
Filling of surface-breaking cavities or fissures with colorless glass, plastic, solidified borax or similar substances (visible under 10X magnification); improves durability, appearance and/or adds weight.
Heated to effect desired alterations of color, clarity and/or phenomena. If residue of foreign substances in open fissures is visible under properly illuminated 10X magnification,“HF” should be used.
Heating and pressure combined to effect desired alterations of color, clarity and/or phenomena.
Imitation product fabricated in such materials as glass, ceramic or plastic designed to imitate or resemble the appearance, but not duplicate the characteristic properties of a natural gemstone. NOTE: A trade term equivalent to imitation is "simulated."
A laser and chemicals used to reach and alter inclusions in gemstones, usually diamonds.
Oiling/resin infusion; the filling of surface breaking fissures with colorless oil, wax, resin or other colorless substances, except glass or plastic, to improve the gemstone’s appearance.
Irradiation using neutrons, gamma rays, beta particles or high energy electrons to alter color. May be followed by a heating process.
Stabilized using a colorless bonding agent (such as plastic); used on porous gemstones to add durability and improve appearance (sometimes referred to as “I” impregnated).
Synthetic materials that have essentially the same optical, physical and chemical properties as a naturally occurring gemstone. NOTE: Trade terms equivalent to synthetic are "lab-created" or "lab-grown."
Diffusion; chemicals used in conjunction with high temperatures to produce color and/or asterism-producing inclusions.
Waxing/oiling; impregnation of colorless wax, paraffin and oil in porous, opaque or translucent gemstones to improve appearance.