JNA July/August 2022 | 15 专题报道 In 2020, Gemfields held its Kagem commercialquality auction in February and then switched to a series of smaller multi-city auctions that November and December to sustain business amid lockdowns and other pandemic-related challenges. The following year, it achieved record-breaking auction revenues – a trend that continued into 2022. “The success of our multi-city auctions, combined with the introduction of an online bidding system, has provided greater flexibility for the Group in the ever-changing circumstances we encounter,” revealed Gilbertson. Sales this year have surpassed pre-Covid results. Gemfields’ revenue from its two Kagem emerald auctions and one ruby auction in the first half of 2022 reached US$181 million, beating its prior record of US$93 million set in the first half of 2018. InMay, Kagem’s emerald auction in Bangkok, Thailand – its second emerald auction in 2022 – set new records for the highest revenue and the highest average price per carat achieved at any of Gemfields’ 41 Kagem auctions since July 2009. Kagem’s auction revenues for the first half of 2022 stood at US$85.7 million, compared to US$92.3 million for the entire 2021. Meanwhile, Gemfields’ ruby auction in June brought in US$95.6 million, a new revenue record for any Gemfields auction. “These results reaffirm the remarkable levels of demand prevailing in the emerald and ruby markets. Demand has been driven by the ability of customers to travel and meet again after the challenges that had been brought upon by the Covid-19 pandemic,” said Gilbertson. According to the company official, all qualities and sizes of Gemfields’ Zambian emeralds and Mozambique rubies have been moving extremely well in the market. “There has been strong demand coming from China as the Chinese luxury goods market continues to grow. China is increasingly becoming a strong consumer of our gemstones, as they can find a stable and reliable supplier in Gemfields,” he added. Blue wonders Spinel and peridot – two gemstones that are soaring in popularity – are also getting a significant supply boost with the discovery of new deposits of quality material. Mahenge Gems has brought to market cobalt spinel from a new deposit approximately 12.5 miles southeast of Mahenge, Tanzania. From October 2021, miners started bringing in sizeable specimens of blue crystals suspected to be the rare cobalt spinel rather than the regular blue spinel. Swiss Gemmological Institute SSEF conducted a detailed analysis of a selection of the material, confirming cobalt as the main colouring element (chromophore), in combination with iron. SSEF found that the inclusions in these Tanzanian cobalt-blue spinels had similarities to the red spinel from Morogoro in eastern Tanzania, namely oriented geometric lamellae with interference colours together with lines of fine particles. Through Raman spectroscopy, SSEF also found colourless apatite and clusters of small zircon inclusions. “Cobalt-blue spinel from this new source inTanzania is a welcome and attractive addition to the trade,” said SSEF Director Dr. Michael Krzemnicki. “It is also fascinating material for us gemmologists to study, as these spinels 14.49-carat peridot rough; 5.96-carat and 4.07-carat peridots from Fuli Gemstones 富丽宝石的14.49克拉橄榄石原石; 5.96克拉橄榄石及4.07克拉橄榄石 37.9M 3,790万克拉 Gemfields’ Kagem emerald mine in Zambia is expected to produce 37,993,000 carats of emeralds and beryls in 2022 Gemfields位于赞比亚的卡棋穆祖母绿矿， 预计在2022年出产总重量达37,993,000克拉的祖母绿和绿柱石
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