Synthetic Quartz (ex Bell Telephone Laboratories)

Item Description

This is a tremendous combination of scientific achievement and U.S. technological history. Here we have one of the extremely rare, first-ever-grown synthetic Quartz crystal specimens in the world. Unlike most such pieces, it is actually notably eye-catching and very well-preserved without any damage, and it's completely INTACT, and not sliced up, which is exceedingly rare in my experience. The crystal has tremendous WATER-CLEAR clarity, along with beautifully smooth to fabulously scalloped sides which gives an interesting textural diversity to the faces. And the modifield corners on the front and unusual termination faces add even more character. You can see small metal seed plates on each termination, which is how the crystals were set in place to grow (read below) Rarely on the market in such size and beauty! Valued highly in today's market as these specimens are several decades old, and how often does one see a piece of this size and quality in such pristine condition available on the market? If you collect Quartz, U.S. specimen, pieces of American history or just unique oddities, don't miss out on this fantastic and important large cabinet dispaly specimen. A brief history of this material: By the 1960s, fine quality Quartz crystals had become an essential part of everyday communications, both civilian and military needs. Precision ground Quartz crystal plates were used in filters, oscillators, and frequency standard circuits in almost all forms of long distance communications. But the high cost and rarity of high quality optic grade Quartz crystals made them a hard commodity to find, most natural crystals contained impurities that made them unsuitable for manufacturing Quartz crystal plates. In 1946, in an attempt to reduce waste and provide a pure source of Quartz crystals, the Bell Telephone Laboratories started experimenting with growing synthetic / artificial Quartz crystals. A process was developed where a small fragment of Quartz is immersed in an alkaline solution in a tightly closed vessel. Under immense heat and pressure (which measured over ten tons per square inch and over 700 degrees Fahrenheit!), the Quartz fragment would dissolve. The liquid would flow by convection to a growing zone where the Quartz would leave the solution and deposit itself on specially designed seed plates. By 1956, the process had been perfected. Now Western Electric Company and Bell Labs were growing crystals on a large scale. Very thin cut seed plates were placed into the vessels along with small pieces of natural Quartz and the alkaline solution to grow the synthetic crystals. The thin line you see running down the center of the crystal is the original thin seed plate and the rest of the liquid Quartz crystallized on that thin piece of Quartz, and the metallic "bands on each end are the contacts where the original seed plate was set into place.