PNJ Diamond Smuggling Case: Reputational Risk Weighs on Q3 2026 Profit Outlook

Overview

PNJ’s subsidiary P-Lab is implicated in a diamond smuggling case, with 28,000 diamonds under investigation. PNJ clarifies that the diamonds did not enter its retail system and that P-Lab only provides certification services, but reputational and governance risks remain elevated. The incident has raised concerns about consumer confidence and could impact Q3 2026 earnings.

Key Facts

• PNJ’s 100%-owned subsidiary P-Lab is involved in a cross-border diamond smuggling case, with 28,000 diamonds under investigation.
• The case was uncovered by Thanh Hoa police on July 2, 2026, with 22 suspects charged and 1,100 diamonds seized.
• PNJ clarified that the diamonds did not enter its retail system; P-Lab only provides certification services.
• Diamond-related products account for approximately 33% of PNJ’s jewelry revenue (10% loose diamonds, 23% diamond jewelry).
• PNJ’s stock closed at VND 46,600 on July 10, 2026, down 6.80% with volume of 10.2 million shares.
• SSI Research notes that customer resale activity declined significantly after the first day of the incident.
• The investigation is ongoing, and final conclusions from authorities are pending.

What Happened

On July 2, 2026, Thanh Hoa police announced the dismantling of a transnational diamond smuggling ring, charging 22 suspects and seizing 1,100 diamonds. Among the suspects is Dang Ngoc Thao, director of P-Lab (PNJ-LAP), a 100%-owned subsidiary of PNJ that provides gold, diamond, and gemstone certification services.

In a meeting with investors on July 6, PNJ management stated that the 28,000 diamonds under investigation did not enter PNJ’s retail system. P-Lab only provides certification services and does not engage in diamond trading. PNJ also emphasized that it imports diamonds through official channels with full documentation. SSI Research reported that customer resale activity dropped significantly after the first day of the incident.

Market Context

PNJ shares fell 6.80% to VND 46,600 on July 10, 2026, with heavy trading volume of 10.2 million shares, reflecting investor concern. The stock is listed on HOSE. The broader retail sector has faced increased scrutiny, with similar investigations affecting other jewelry companies. PNJ’s dominant market position and high brand recognition may attract tighter regulatory attention.

Strategic Significance

The incident highlights governance risks at PNJ, particularly regarding internal controls over its subsidiary P-Lab. While PNJ maintains that its diamond supply comes from official imports and customer buybacks, the case raises questions about the effectiveness of its certification processes. A prolonged decline in consumer confidence could slow revenue growth, especially given that diamond-related products contribute one-third of jewelry sales. The outcome of the investigation will be critical in determining long-term brand trust and market share.

What to Watch

• Final conclusions from authorities on the scope of the smuggling case and any potential penalties.
• PNJ’s Q3 2026 earnings release, expected in October 2026, to assess revenue impact from diamond sales.
• Consumer sentiment surveys or foot traffic data at PNJ stores in coming months.
• Any changes in PNJ’s internal control policies or management actions regarding P-Lab.
• Regulatory developments in the jewelry sector, including potential industry-wide compliance requirements.