Get latest articles and stories on Business at LatestLY. Malabar Gold & Diamonds, one of the largest gold and diamond retail chains of the country, has launched the world s biggest jewellery showroom in Kozhikode, Kerala to offer a world class jewellery shopping experience. Business News | Malabar Gold & Diamonds Launches World s Biggest Jewellery Destination Artistry Store in Kozhikode, Kerala.