Evident disadvantages with ASM are counterbalanced by the immense economic benefits. The mining and refining processes are labor intensive and associated with a variety of health problems due to accidents, overheating, overexertion, dust inhalation, exposure to toxic chemicals and gases, violence, and illicit and prescription drug and alcohol addiction. Equipped with primitive tools like picks, shovels, buckets, and gold pans, they work mining valuable resources, like gold, diamonds, tin, lithium, rare earth elements, tantalum, and cobalt, and any other usable commodity, for example, sand, coal, or mica.
Some of the poorest people in the world's poorest countries eke out a living in artisanal and small-scale mining (ASM). The gemstones, contemporary with the crown, probably arrived in Europe by the silk trade road. The filigrees contain approximately 86 wt % Au, 7 wt % Ag, and 7 wt % Cu, thus confirming a gold-rich composition. Analyses have identified emeralds from Pakistan, reddish pink spinels from Tajikistan, red almandine garnets from India, turquoise from Iran, blue sapphires from Sri Lanka or Myanmar, and European pearls. Raman and portable X-ray fluorescence spectrometer (pXRF) techniques have been used to determine the nature and sources of all samples, as well as the composition of filigrees. The crown is decorated by filigrees, flowers, and approximately 400 pearls and coloured (green, reddish pink, turquoise, red, blue) stones showing simple cutting with various sizes and shapes. This beautiful piece of goldsmithery is made of eight gold plates, topped by round lobes, and connected to each other by hinges blocked with a pin decorated by a pearl. We invite you to view our full selection of sapphires, blue sapphire rings and custom sapphire jewelry and discover what makes the Natural Sapphire Company the world's greatest collection of natural sapphires.The reliquary crown, hosted in the diocesan museum of Namur, was produced during the beginning of the 13th century to shelter a fragment of the holy crown of thorns. Our jewelry and gemological specialists will work with you from start to finish to create your custom sapphire jewelry. All of our sapphires are cut on our premises and are available loose or mounted in a custom setting. We offer a vast selection of blue sapphires, pink sapphires, yellow sapphires, white sapphires and other unique natural sapphires.
Our natural untreated sapphires offer true beauty, rarity and superior value compared to treated sapphires. Our sapphires are not synthetic, heated to extreme temperatures, diffused, irradiated, glass filled or oiled. At the Natural Sapphire Company we specialize in providing our customers with the finest quality natural sapphires.
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