Where can I identify the authenticity of jade articles?

Hong Kong Shi Sheng International is a prestigious auction house in the world art market with a registered capital of100000 Hong Kong dollars. It is located in Hong Kong, the financial capital of Asia. Since its establishment, it has always pursued professional services, abided by industry rules, advocated standardization and self-discipline, and actively promoted the development of cultural and artistic industries. Hong Kong Shi Sheng International will hold large-scale auctions of China porcelain, calligraphy and painting and arts and crafts in Hong Kong, London, new york and Paris. The auction will collect masterpieces handed down from all over the world or palace treasures, porcelain, calligraphy and painting, rare jade, Ming and Qing furniture treasures, attract collectors from all over the world to bid fiercely, and keep close contact with major art institutions and well-known private collectors. Now we will join hands with Huaxia Auction Network to collect high-end collections from the Mainland and Hong Kong! With profound professional knowledge, enthusiasm and experience, Shi Sheng International Team will create an auction feast for collectors and art lovers in the cultural and art market with huge customer resources. The collections collected in this Hong Kong auction have been strictly screened by the expert appraisal committee, and the number of places is limited. Please make an appointment to register in advance. We will hold exhibitions in Shanghai and Hong Kong, and then hold an auction in Hong Kong. This is a platform for the international market. I hope collectors will seize the opportunity. 1. Collection scope: China painting and calligraphy: masterpieces of celebrity painting and calligraphy in past dynasties, Lingnan celebrity painting and calligraphy and contemporary painting and calligraphy; China ceramics: fine ceramics of past dynasties, mainly in Yuan, Ming and Qing official kilns, with Song porcelain being the best; Emerald jade: Ming and Qing jade, high ancient jade, modern jade, requiring good jade quality, skillful carving and good skin color. Miscellaneous products: stationery, purple sand, seals, tooth carvings, inkstones, rare books of ancient books, gold and silver utensils, etc.