October 4, 2022
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Mining is also now not allowed alongside the craggy cliffs of Whitby, though the seaside typically is crowded with rockhounds, newbie stone hunters who comb the coast for jet, a mineraloid that’s the fossilized stays of an ancestor of the monkey tree.

However blue john, a semiprecious mineral that’s a wide range of fluorite with distinctive blue-purple and yellow-white banding, has been mined in Castleton, within the Peak District, for the reason that early 18th century and presumably earlier, Ms. Hansen stated.

Chris Sellors is the proprietor of C.W. Sellors Superb Jewellery, which has 19 shops throughout northern England, together with in Castleton and Whitby, promoting jet and blue john jewellery. He stated the one remaining blue john mine, which was in Castleton, was restricted to producing a half a ton of fabric a 12 months.

Throughout the materials’s 18th-century heyday, it could possibly be present in massive portions and was used extensively in decorative objects. In accordance to Mr. Sellors, a producer named Matthew Boulton, whose extremely embellished gilt and blue john items are actually within the Royal Assortment at Buckingham Palace, managed to purchase 17 tons of blue john in 1870 alone.

Right this moment, as blue john is discovered solely in small deposits, the fragile stone is well-suited to jewellery as soon as it has been strengthened with a mother-of-pearl backing, Mr. Sellors stated.

Along with his institution of the W. Hamond Museum of Whitby Jet in 2019 and annual travels to the gem exhibits at Tucson, Mr. Sellors is making an attempt to promote British gems past vacationer trinkets. “It’s a small market, however we’re very pleased with what we do,” he stated. “We would like to elevate it as a fabric. Tanzanite could be very uncommon, however blue john is far rarer, and so is jet.”

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