By Ilia Deleff
An fascinating tale concerning the big extra special crystals, their discovery, gathering and fortune. Written by means of the recognized collector and specialist on massive crystals Ilia Deleff, physician Honoris Causa. Deeply confident that each glant crystal is sort of a ''stone book'' sporting in it priceless clinical info, Mr Deleff many times encouraged his principles that extraordinary crystals of minerals are ordinary creations that has to be kept and preserved for humanity. Many Western ecu and American museums are in ownership of important collections or separate minerals supplied by means of Ilia Deleff. In 1983, France obtained his notable selection of significant quartz crystals, exhibited within the nationwide Museum of common background in Paris. In 1985, he donated to his place of birth Bulgaria an identical exact choice of big crystals. The booklet is richly illustrated by way of colour images of crystals and comprises additionally chapters written in cooperation with the mineralogist Dr R.I.Kostov. The bankruptcy ''Gem Treasures of Brasil'' is the main entire, updated, survey at the subject. The publication is of use to any geological or mineralogical library, mineralogical museums, experts within the box, creditors of crystals and all enthusiasts of nature
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Extra info for Phenomenal Crystals: Giant Quartz Crystals, Unique Minerals in World Museums, Gem Treasures of Brazil
Again I was present during the digging out of the exceptionally large crystal that I later named Golcunda. It is a fragment of a really unbelievably large crystal (about 10-13 tons), found in a tunnel at a depth of 15 meters. There was no technical opportunity for this giant to be taken out to the surface in its entirety, all the more so because after a careful inspection it was established that it was cracked and not quite compact. Different natural processes are often the reason for the appearance of cracks on the crystals, and very few giant crystals are preserved in a perfect state.
In 1968, together with a French society, I organized another exhibition in Paris. Almost 45% from the collection of the Pio Mariani Museum in the town of Desio in Italy was supplied by me, as well as a large part of the collection of the La Moineaudiere Museum in the town of Gerardmer in France. Many Western European museums possess mineral samples of various types and sizes supplied directly by me or through my representatives. In the course of time in many countries of Europe many societies of friends of mineralogy and paleontology were founded (especially youth and student ones), and I permanently Fig.
Tens of thousands of tons of this material were extracted for satisfying the world’s industrial needs. The extraction of small crystals was 34 Cyan Magenta Yellow Black 35 Delev Fig. 9. The author Ilia Deleff with some of the first giant smoky quartz crystals from the Pedra Alta mine in his collection. 35 Cyan Magenta Yellow Black 36 Delev very large, while middle-sized crystals were considerably fewer and the finding and mining of a giant crystal was so rare that whenever it happened it turned into a great event.