Group to Marmara Metal Refinery
In 1995, Mahmoud Sultan established his first workshop, specializing in gold craftsmanship, melting, manufacturing and trading. Building on this experience, the business expanded into precious-metals and bullion trading in 2007, gradually extending its activities into Istanbul’s Grand Bazaar and strengthening its position across regional markets. In 2022, Marmara established its operations in Dubai, marking an important step in the development of Marmara Precious Metals Group and its international bullion activities. Continued growth, increasing trading volumes and expanding global demand led the ward industrial-scale refining and production. In 2026, the foundations of Marmara Metal Refinery were laid, beginning a new chapter dedicated to integrated gold and silver refining and the production of Marmara precious-metals products.
India Bullion Market
India Bullion Market is one of the world’s largest and most established markets for physical gold, with Marmara maintaining active access through its international network of bullion counterparties and trading relationships.
Singapore Bullion Market
Singapore Bullion Market serves as one of Asia’s leading precious-metals trading hubs, with Marmara maintaining active commercial reach through established international trading relationships.
Shanghai Gold Market
Shanghai Gold Market represents one of Asia’s most significant centers for gold trading, with Marmara maintaining commercial access through its international bullion network and established counterparties.
Dubai Business Group for Bullion & Gold Refinery — DBRG
Dubai Business Group for Bullion & Gold Refinery (DBRG) supports collaboration, development and excellence within Dubai’s bullion and refining industry, with Marmara Precious Metals Group serving as a Principal Member.
Borsa İstanbul — Precious Metals Market
Borsa İstanbul Precious Metals Market forms a central part of Türkiye’s bullion ecosystem, with Marmara maintaining connectivity through established relationships within Türkiye’s gold and bullion industry.
Dubai Gold & Commodities Exchange — DGCX
Dubai Gold & Commodities Exchange (DGCX) represents a leading commodities and precious-metals marketplace in the region, with Marmara Precious Metals Group serving as a Trade Member and strengthening Marmara’s institutional presence in Dubai.
The Sultan Family continued the company’s operations under the name of Marmara Metal Refinery FZE Industrial Ltd., strengthening its industrial structure and advancing its infrastructure to support the Group’s long-term refining and precious-metals production activities.
Under Marmara Precious Metals Group, Marmara has continued to strengthen its institutional presence across the international precious-metals industry. The Group is represented as a Trade Member of the Dubai Gold & Commodities Exchange (DGCX) and a Principal Member of the Dubai Business Group for Bullion & Gold Refinery (DBRG), while maintaining established market connectivity across Türkiye and active commercial reach into major bullion markets including Shanghai, Singapore and India. Marmara’s existing precious-metals operations are also supported by ISO 9001:2015 and ISO 14001:2015 management systems.
Today, Marmara Metal Refinery is focused on integrated gold and silver refining, precious-metal recovery, assay and laboratory services, and the production of high-quality bullion. Alongside its refining activities, Marmara Precious Metals Group continues to trade precious metals across international markets and develops Marmara-branded gold and silver bars and investment products, combining established market expertise with advanced refining and production capabilities.