Chemistry in the Development of Synthetic Gemstones

Synthetic Gemstones

Throughout history, gemstones have been reserved mainly for royalty and families who were very wealthy. People who could not afford them often sought ways to have the things that they desired. The practice of imitating jewels and gemstones has been around almost as long as they have been coveted. This is true as far back as the "Ancient Egyptians who feigned gemstones with glass and glaze, because genuine were too expensive and/or too rare" (Schumann, 242). One of the earliest imitations to resemble turquoise, prized by the Egyptians, and some 7,000 years ago they constructed a turquoise-colored ceramic substance, termed faience, that was used for beads, amulets, pendants, and rings (Matlins and Bonanno, 227). Also, blue glass gems were found in King Tut's tomb (Matlins and Bonanno, 227). It is fair to say that imitation gems have been around for quite awhile. Not only have the poor made them, but also royalty such as King Tut, because the "real thing" was just too rare to get a hold of.

Glass and other substances have been used to imitate gemstones for a very long time. It wasn't until recently that an actual gem was synthesized using a special technique developed by a French chemist A.V. Verneuil. Verneuil created the flame fusion process in 1883 where he synthesized the first gemstones. He "succeeded in producing gem quality synthetic rubies in 1888" (Schumann, 243). His method melts powdered aluminum oxide with some other additives, which include a dye. The molten parts form into a pear shaped boule. Although there aren't any crystal faces, the crystal structure is the same as the natural gem. Synthetic blue sapphires were produced in 1910 and sometime later, colorless, yellow, green, and alexandrite-colored sapphires were perfected (Schumann, 243).

Synthetic diamonds have always been a sought after item, mainly because of their price and rarity. However, their price and scarcity are totally artificial. The diamond seller DeBeers is long known to have a monopoly over the sale and distribution of diamonds across the whole world. It is also known that DeBeers has large stockpiles of diamonds that they withhold from the market so that the price stays high, and so that the public still sees the diamond as a rare and precious stone. Synthetic diamonds will put a stop to all of that. In the past, several companies have tried to enter the market, competing with DeBeers. Since DeBeers has such a hold on the market, they were able to drop the prices so low that the new companies couldn't afford to be in business. Again, all of that is going to change with synthetic diamonds. Even if the price of diamonds drops significantly, the cost to produce one carat of synthetic diamond by Chemical Vapor Deposition is five dollars. When examined by a diamond expert, the only way that he could tell that it was artificial was that it was too perfect. The crystal structure was ideal. The expert said that no where in nature could a diamond this perfect be found. That is why DeBeers is so scared of these new diamond "growers," they can produce a large, perfect diamond at an almost ridiculous price.

The jewelry market isn't the largest draw for synthetic diamonds; it's only a temporary way to pay for research into the field of diamond semiconductors. Today's computer chips are operating at a very high heat. In order for a computer chip to perform at its best, it must perform at the highest speed possible without failing because of the heat. Diamonds are the highest conductors of heat that we know of. If we were able to make a computer chip out of diamond rather than silicon, the speed would increase dramatically. The diamond chips could withstand heats that would turn a silicon chip into liquid. Synthetic diamonds don't