Lab-created stones are formed in a controlled environment whereas natural gemstones are formed by mother nature's natural processes. Both share the same physical, chemical and visual properties. The lab produced stone is usually free from major defects and can be structurally stronger than its natural counterpart while also achieving optimum color.

All of our gemstones except for our cubic zirconia are natural gemstones. We require top grade quality from our suppliers with the main requirement being color intensity See similar questions...

Although both mouthpieces are effective and safe, the professional lab-created mouthpieces are more precise and more comfortable to wear. Since they are trimmed at the gingival line, they help you save bleaching gel and are better for people who may have sensitivities to bleaching gels on their gums. See similar questions...

All of our stones are 100% natural – no created or synthetic stones. For more information see Trading Pledge and Third Party Certification. See similar questions...

Natural' often is misrepresented in product labeling to imply 'healthful,' but 'natural' only means that the product has undergone minimal processing. Unlike products that are certified organic, natural products have no certification or inspection system. Also, 'natural' does not necessarily relate to growing methods or the use of preservatives. See similar questions...

Both. There are certain brilliantly-colored stones (such as Amethyst) which don't need any alteration. Then there are other stones which tend to be well-colored, but which have a little chemical "help" to make them a more even color (such as Garnet). Then there are the stones that were NEVER meant to look the the color they do, and are dyed beyond an inch of their life (think Red Coral and Blue Topaz). See similar questions...

Yes. Since the stone surface is porous, it may host marine organisms and on a humid day may try to 'sprout'. I boil them in a disinfectant solution for several hours. I do not want them to *bloom*. See similar questions...

Natural stone may vary in thickness depending on the way they have been processed. If the stone has been calibrated or honed, it will have far greater uniformity. Thickness is usually specified in millimeters with a certain tolerance either side of the designated thickness. Honed, gauged or calibrated products are a little more expensive, however laying them is easier and cheaper because grading is no longer required See similar questions...

Moqui marbles (also known as shaman stones or thunderballs) are a completely natural formation. They are a compact sandstone balls with a metal crust. This outer shell contains a high iron (hematite) and other heavy metal content. Little is known about these stones and how they are formed. What scientists do know is this heavy metal shell displays a much higher metal content than is available in the surrounding environment. See similar questions...

The T-LAB project originated from thinking about the relevance of text and content analysis and from examining the problems encountered by people using ad hoc software for the purpose. In particular, T-LAB has been designed to offer - within a unique environment - easy to use and integrated tools. See similar questions...

The author of T-LAB is Dr Franco Lancia, a psychologist who has spent many years studying and experimenting with the use of software for text analysis. See similar questions...

We do not offer any services such as haircutting or coloring that are usually offered in full service salons. We concentrate on treatments that help you look and feel your best. And at Nine Stones, we pride ourselves on maintaining an environment that is both tranquil and appealing. We want you to feel at home here. See similar questions...

Simulated stones are stones that are made of a material other than what it is attempting to copy. Cubic zirconium, lab grown corundum, lab grown spinel and glass are common materials used to simulate gemstones. There is a NOTICEABLE difference between simulated and genuine stones. See similar questions...

Natural hormones are, in fact, bioidentical hormones. The fact that the bioidentical hormones come from natural plants (soy or yam plants) does not make them bioidentical. From there they are taken to a chemical plant where they are further processed into the bioidentical forms. They are further tested for bioidentical purity, so that when a compounding pharmacy receives these products they are ready to be compounded into different dosage forms. See similar questions...

All of our gemstones are genuine unless otherwise stated as lab created. The gold in our items are solid -- NOT bonded, electroplated, or HGE -- 10 karat or 14 karat gold. When labeled as silver jewelry, our items are classified as sterling silver and bear 925 mark. See similar questions...

Both offer good services but the in-hospital lab has the added benefit of providing immediate additional medical services as needed; the hospital has night time security for added safety; the hospital usually has a larger pool of technicians from which to draw so that testing is not delayed. See similar questions...

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The rarest gems are classified as precious stones. This includes diamonds, sapphires, emeralds and rubies. All other gemstones are classified as semi-precious. See similar questions...

There are certain conditions in the urine including those caused by not drinking enough water, that make crystals which can tribute to stone formation. Some patients form stone because of anatomical malformations of the urinary tract, while other patient may have a genetic predisposition, environmental or nutritional risk factors. See similar questions...