Our memberships in world recognised trade and jewellery related associations makes Opal House a name clients can trust in the global jewellery market. Existing memberships include:

• Hong Kong Jewelry Manufacturers' Association (honorary life member)
• Hong Kong Jewellery & Jade Manufacturers Association
• Jewelers Board of Trade based in the USA we are listed members
• Hong Kong Chamber of Commerce
• Chinese Manufacturer’s Association of Hong Kong
• Hong Kong Art Craft Merchants Association Ltd
• International Colored Gemstone Association.