International News
CIBJO report considers listing gem labs complying with Blue Book Standards
With less than a month to go before the CIBJO Congress 2025 opens in Paris on 27th October, the seventh pre-congress Special Report has been released by the CIBJO Gemmological Commission, chaired by Hanco Zwaan.

“There have in recent years been concerns expressed about gemstone reports issued by different labs for the same stones, with different and sometime contradictory findings,” said Hanco Zwaan. “This has brought into question the qualifications of the laboratories issuing the reports, taking into consideration that, worldwide, there is very little official oversight as to what are the requirements for an organisation to claim to be a gem testing laboratory.”
Central to the proposed listing would be the CIBJO Gemmological Laboratories Blue Book, which outlines management and technical guidelines for gem labs, aligning with ISO Standard 17025. Other relevant Blue Books cover diamonds, coloured gemstones, pearls, and precious coral.
According to Dr. Zwaan, the system would allow the trade and consumers to clearly identify laboratories that operate with quality management systems and transparency. “The results given in reports often have a significant impact on the value of the item being reported upon,” he explained.
A key document that would have to be applied by listed labs would be the CIBJO Gemmological Laboratories Blue Book, a mammoth opus that is compiled by the Gemmological Commission. Providing guidelines for the management and technical operations of gem labs, it complies with and expands upon ISO Standard 17025, which is the internationally recognised accreditation management systems for testing and calibration laboratories. Also relevant are CIBJO’s Blue Books for diamonds, coloured gemstones, pearls and precious coral.
The Gemmology Special Report also reviews progress on the forthcoming CIBJO Jade Guide, highlights the Laboratory Manual Harmonisation Committee’s work, and examines the increasing role of artificial intelligence and machine learning in gemmology.
International News
MCX Gold, Silver Rise Despite Global Weakness; US Data, Iran Tensions Keep Bullion Markets On Edge
While Domestic Gold and Silver Prices Edged Higher On MCX, International Spot Gold Slipped Amid Uncertainty Over US-Iran Negotiations, Inflation Concerns
Gold and silver prices witnessed mixed momentum on May 28, with domestic futures on the Multi Commodity Exchange (MCX) trading marginally higher even as international spot gold prices remained under pressure. The divergence reflects cautious investor sentiment amid ongoing geopolitical tensions, uncertainty surrounding US-Iran peace negotiations, and expectations of tighter monetary policy in the United States.
MCX gold futures for June delivery rose modestly by Rs. 215 to Rs. 1,57,898 per 10 grams, while silver futures for July delivery gained Rs. 2,000 to trade at Rs. 2,72,628 per kilogram in early trade. The domestic uptick was supported by weakness in the US dollar and cautious positioning ahead of key macroeconomic developments.
However, global spot gold prices extended losses for a second consecutive session as investors remained wary of the inflationary impact of elevated energy prices and the possibility of prolonged geopolitical instability in the Middle East. Analysts noted that fading hopes of a near-term diplomatic breakthrough between the US and Iran have revived concerns around oil supply disruptions, higher crude prices, and inflation risks — factors that continue to influence precious metals.
According to market experts, gold has struggled to regain strong upside momentum despite its safe-haven appeal, as rising US bond yields and a firmer dollar have reduced investor appetite for non-yielding assets like bullion. Silver, meanwhile, remained under pressure globally after recent military developments in southern Iran weakened expectations of an immediate resolution to regional tensions.
Investors are now closely watching key US macroeconomic indicators, including ADP employment figures, GDP growth data, and the Personal Consumption Expenditures (PCE) inflation index — the Federal Reserve’s preferred inflation gauge. These data points are expected to offer fresh direction on the Fed’s interest rate trajectory, which remains a crucial driver for gold and silver prices.
With geopolitical risks still elevated and inflation concerns persisting, bullion markets are expected to remain volatile in the near term as traders await clearer signals on both diplomacy and monetary policy.
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