Adamas

Seven rooms on a rocket scientist’s campus

The brand that would become Russia’s largest jewelry company began in April 1993 inside seven rooms of a Moscow space-research institute. The NII Tochnykh Priborov campus on ulitsa Dekabristov, designed for satellite instrumentation, housed 476 square metres of Italian chain-making equipment and a small team producing gold jewelry with no retail infrastructure and no brand recognition. Five months later, Adamas made its first sale at GUM on Red Square. By May 1994, the first branded store opened in Sochi. The trajectory from scientific campus to national retail chain was unusually fast for post-Soviet Russia, where most consumer brands struggled to establish trust with customers who had spent their entire lives buying state-produced goods of indeterminate quality. Adamas offered something new: branded, hallmarked gold jewelry with consistent craftsmanship, sold under a name that consumers could remember and return to.

By 2008, the Stolichny Yuvelirny Zavod had been designated Russia’s largest jewelry factory. Adamas operated 150 stores and reported revenue of RUB 6.14 billion. The brand became synonymous with accessible fine jewelry across Russia’s emerging middle class: gold chains, wedding rings, diamond earrings at prices that middle-income consumers could justify. The product range eventually exceeded 30,000 SKUs spanning rings, bracelets, pendants, necklaces, brooches, children’s jewelry, and men’s collections — a breadth of catalogue that no Russian competitor matched at the time.

In 2014, the company manufactured all medals for the Sochi Winter Olympics and Paralympics, along with trophies for the Formula 1 Russian Grand Prix, KHL Championship, and World Chess Championship. The Olympic commission cemented Adamas’s institutional legitimacy and made the name recognizable to audiences who had never entered a jewelry store. Revenue grew steadily through the mid-2010s, reaching RUB 11.6 billion in 2016 with 6.7% market share. Adamas was Russia’s largest jewelry company by revenue, with a brand recognition score that industry surveys consistently placed first among Russian jewelry names.

What the public saw was a success story. What the Federal Tax Service found was something else entirely.

The architecture of a RUB 6 billion fraud

Between 2012 and 2014, the Adamas group operated a VAT evasion scheme through more than 50 shell companies. The mechanism was sophisticated. Shell entities signed gold bullion loan contracts with banks, obtaining physical gold under loan transactions that were exempt from VAT. The loans were then closed via mutual offset of counter-obligations without returning the bullion. The gold flowed through chains of fictitious entities while the factory claimed to purchase finished jewelry from the same shells, creating paper trails that obscured the real transactions. Total confirmed tax damage reached RUB 6 billion across the group.

The scheme unravelled in stages. In October 2015, CEO Artur Astashin (Артур Асташин) was charged with RUB 400 million in tax evasion. On December 23, 2016, the Investigative Committee opened a second criminal case against factory director Andrey Shumaev (Андрей Шумаев), raiding four offices and identifying tax damage exceeding RUB 5 billion. In February 2020, a third case reached former executive director Maxim Vainberg (Максим Вайнберг), who was arrested in absentia and placed on the Interpol wanted list; total reassessed tax damage across all cases had grown to RUB 6 billion. Founder Andrey Sidorenko (Андрей Сидоренко), who controlled the group through Luxembourg, Cypriot, and BVI offshore entities, was never charged.

The criminal cases alone would have been survivable for a company of Adamas’s scale. Executives could be replaced. Tax liabilities could be settled. But the real existential threat came from the macroeconomic collapse that accompanied them — a convergence of regulatory crackdown and currency crisis that destroyed not just one company but an entire sector. When the ruble lost half its value against the dollar in December 2014, Russian gold jewelry production collapsed from 110 tonnes to 59 tonnes in a single year. Bank credit rates surged from 9–14% to 25–40%. Consumer demand evaporated. More than 30 jewelry retail chains, including Yashma Zoloto (Яшма Золото) — which suffered its own RUB 31.7 billion bankruptcy partly triggered by Adamas’s RUB 3 billion default — ceased operations entirely. The industry’s gray VAT schemes, which had been tolerated during boom years, became enforcement targets during the downturn. Adamas was the largest domino, but it fell alongside an entire sector.

On May 11, 2017, Adamas-Yuvelir was declared bankrupt. Creditor claims totalled RUB 27.5 billion — more than two full years of peak revenue. The majority of those claims were intercompany debts inflated by the fictitious document flow the fraud itself had created, meaning the criminal scheme had not merely drained value from the company but corrupted its entire financial architecture. The brand that had made Olympic medals was now synonymous with Russia’s largest jewelry tax fraud.

Buying the memory, not the wreck

The bankruptcy proceedings separated the Adamas operating entity — AO “1-ya Yuvelirnaya Set” (АО “1-я Ювелирная Сеть”), which ran the actual stores — from the holding companies that carried the debt. In autumn 2020, Svyatoslav Potapov acquired the operating entity’s shares at a bankruptcy auction, maintaining continuity. In July 2021, Mikhail Nesvetailo (Михаил Несветайло), a Belgorod jewelry manufacturer who had built the Art-Karat factory on a RUB 700 million investment, and Eduard Bendersky (Эдуард Бендерский), a former FSB Vympel operative turned corporate lawyer, closed their acquisition of Adamas for an estimated RUB 400 million to RUB 1 billion.

The price reflected the market’s consensus: the brand was terminal. Industry analyst Alexey Antonov stated publicly that “owning a large offline network is no longer an advantage — stores generate rental costs and reduce profit.” Every Russian jeweler knew the criminal history. The acquisition thesis rested on a single insight that the market had missed. Consumer surveys consistently showed that Adamas remained Russia’s most recognized jewelry brand, despite the scandal. “Adamas is an absolutely recognizable leader in Russia’s jewelry brands market,” Nesvetailo told Uvelir.info in 2022. Customers distinguished between the product they trusted and the corporate structure that had defrauded the government. The new owners were buying the customer’s memory, not the bankrupt balance sheet.

The rehabilitation strategy was threefold. First, vertical integration: Nesvetailo’s Art-Karat factory in Belgorod, a 6,000-square-metre facility that was the only jewelry factory in Russia’s Central Federal District, was folded into the Adamas holding in March 2023, eliminating middlemen and restoring the production-to-retail supply chain. Production volume grew 57% year-on-year in 2023. Second, a complete rebrand: RUB 300 million invested in April 2023 for the brand’s 30th anniversary, introducing a new Latin-script “ADAMAS” identity, a “lunar attraction” design philosophy, and a visual language that signalled a clean break from the Sidorenko era. Third, professional management: Vladislav Golovkin (Владислав Головкин), with experience at Gloria Jeans, Nike Russia, Sunlight, and Sokolov, was appointed CEO in September 2023 to impose retail discipline on a chain that had operated without it during the bankruptcy years.

“Investing in business development during a period when you instinctively want to cut all budgets is a bold but the only correct strategy,” Anastasia Tugbaeva (Анастасия Тугбаева), Adamas’s deputy CEO for marketing, told RBC at the rebrand launch. The counter-cyclical bet — spending RUB 300 million while the company was still loss-making — was the strategic inflection point. Adamas posted its first profit under new ownership in 2023: RUB 15 million on revenue of RUB 9.8 billion, a 31.6% year-on-year increase. By 2024, revenue had reached RUB 10.4 billion — 90% of the 2016 peak — with net profit tripling to RUB 52.3 million. The company operated more than 200 stores in 80 cities and had expanded internationally into Kazakhstan, Belarus, and Uzbekistan, with Kazakhstan stores generating per-store sales 20% above the Russian average.

The diamond king’s son comes calling

In January 2026, Shai Leviev’s SLH Group, registered in Hong Kong and linked to the MIUZ Diamonds empire controlled by his father Lev Leviev, acquired 100% of Adamas for an estimated RUB 6.5 billion. The deal delivered the turnaround operators an estimated five-to-fifteen-times return on their original investment in four and a half years.

The strategic logic was consolidation, not philanthropy. MIUZ Diamonds operated more than 350 stores with RUB 23.5 billion in revenue, positioned in the mid-to-premium segment. Adamas, with its mass-market positioning, 200-plus stores, and RUB 10.4 billion in revenue, filled the segment gap below MIUZ without cannibalizing it. The combined entity now fields approximately 550 stores and generates roughly RUB 34 billion in aggregate revenue, covering premium through mass-market across Russia, Belarus, Kazakhstan, and Uzbekistan. Whether Adamas stores will maintain their separate brand identity, be dual-branded, or gradually migrate toward MIUZ positioning remains undisclosed.

The Leviev acquisition also signalled something about Russia’s post-sanctions jewelry market. When Cartier, Tiffany, Bvlgari, and Swarovski exited Russia after February 2022, the premium segment lost an estimated 80% of its volume. Domestic brands rushed to fill the gap, but the brands that mattered were those with existing infrastructure, production capability, and consumer trust. Adamas, with its vertically integrated supply chain and three decades of brand recognition, was precisely the kind of asset that benefited from Western withdrawal. The combined MIUZ-Adamas platform now covers the full price spectrum from democratic mass-market items to exclusive single-copy pieces, with its own mining, manufacturing, and retail operations insulated from import dependency.

The acquisition confirmed a thesis that the bankruptcy had obscured. Adamas was never a company that failed; it was a company whose corporate structure was used to commit fraud. The stores kept operating. The customers kept buying. The brand recognition survived criminal prosecution, three executive arrests, an Interpol warrant, industry-wide collapse, and RUB 27.5 billion in claims — because recognition is stored in the consumer’s mind, not in the corporate registry. The criminal liability was corporate. The commercial value was cultural.

For investors assessing distressed consumer brands in emerging markets, Adamas offers an unusually instructive case study. The turnaround operators identified the precise boundary between the asset that had failed — the holding structure — and the asset that had not — the brand, the stores, the customer base. They acquired the latter for a fraction of its replacement cost, invested in rehabilitation rather than extraction, and exited to a strategic buyer whose portfolio made the combination more valuable than either brand alone. The entire sequence, from RUB 27.5 billion in bankruptcy claims to a RUB 6.5 billion exit, took less than five years. The brand itself, from seven rooms in a space-research institute to 200 stores across four countries, has now survived for more than three decades. The corporate structures that held it changed three times. The name on the storefront never did.

Last updated: April 5, 2026