Core Viewpoint - The article emphasizes the rarity and beauty of jade, particularly the exquisite green jade known as "碧玉" (Biyu), which has historical significance and is highly sought after by collectors [4][6][9]. Group 1: Characteristics of Biyu - Biyu is described as a precious jade that exhibits a deep green color reminiscent of emeralds, requiring thousands of years for its formation through mineral infusion [8][9]. - The jade's color and quality are influenced by the presence of chromium and iron ions, with higher concentrations leading to the formation of black spots, making pure specimens rare and valuable [29][30]. Group 2: Market Dynamics - The scarcity of Biyu due to mining restrictions has driven up its prices, making it a luxury item that many collectors find difficult to acquire [9][10]. - The article mentions that the current market offers a selection of Biyu products, including bracelets and jewelry, at competitive prices starting from 69 yuan, making it more accessible to enthusiasts [13][35]. Group 3: Product Offerings - The article highlights a collection of Biyu jewelry, including hand-strung bracelets and earrings, emphasizing their quality with no visible cracks or black spots [22][33]. - Specific products are showcased, such as Biyu necklaces and earrings, which are marketed as both aesthetically pleasing and a good investment due to their rarity and craftsmanship [51][76].