Lannyte: a Diamond Simulant

princess cut lannyte

lannyte round

The Lannyte Company was established in 1985 in response to a growing demand for alternatives to very expensive gemstones. The company has become a leader in the development of laboratory-grown, high quality gems that very effectively simulate diamond, ruby, sapphire, emeralds, tanzanite, and many others. The Lannyte Company makes use of advances in mineralogy, chemistry and engineering in its ongoing research to create such high quality gemstones in a broad range of colors.

The resulting stones are cut by hand to insure that they achieve ideal proportions. This as opposed to being cut by machine which produces facets and proportional relationships with greater inaccuracies and, ultimately, stones with less life and brilliance. While hand cutting these gems is a more expensive way of producing them, the result is a far superior stone.

Lannyte is a very durable gemstone that's much more difficult to injure than most stones. This combined with a responsibility to its consumers, the Lannyte Company was the first in the industry to grant a written, automatic, total lifetime Guarantee that promises to replace any of its man-made gemstones that ever chip, crack or scratch under ANY circumstances. I've used Lannyte in quite a number of pieces of jewelry I've made during the past fourteen of fifteen years. During this time I've seen only one of their stones ever sustain injury. The company quickly and without question furnished a replacement stone that I set in its place.

I provide below their stated guarantee:

If, following the purchase of the Lannyte® gemstone, the Lannyte gemstone becomes cracked, chipped, discolored or broken in the course of normal domestic use, the Lannyte Company will replace the Lannyte gemstone. The replacement will be at no cost or obligation to the buyer, upon delivery of the destroyed or damaged Lannyte gemstone, together with satisfactory proof of purchase or this guarantee form, to the Jeweler from whom the Lannyte gemstone was purchased. Notwithstanding anything to the contrary herein contained, the Lannyte Company shall not be liable for any consequential damages suffered by the buyer from any cause whatsoever. The parties agree that the replacement of the Lannyte gemstone will constitute the buyer's sole remedy and the Lannyte Company's sole obligation.

Also their statement regarding their simulated diamonds:

With all the diamond simulants on the market, how is the Lannyte Company's Simulated Diamond superior? Simply stated, our stone most closely resembles a diamond. In fact, without performing a specific gravity test or examination under a high-powered microscope, even accredited gemologists have difficulty recognizing that our simulated diamonds are not natural!

This incredible reproduction is achieved through several factors. First, the refractive index (that which gives the stone its "sparkle") of our simulated diamonds is very close to that of a natural diamond. Our stones have an approximate refractive index of 2.20 to 2.23, whereas diamonds have a 2.41. By comparison, Moissanite, priced considerably higher than our stones, has a refractive index of 2.65. Furthermore, like diamonds, our simulated diamonds are singly refractive (Moissanite is double refractive).

Click here to return to the Gemstone page.