Ms. Yue has written a book, Window on Jewelry, which explains to the layman the characteristics of jewelry, stipulates a reasonable price and describes how to buy desirable pieces.
就這樣替那顆紅寶石定下了它應有的身價，為它討回了公道。為此余玉雲也跟著高興了一整天。一次難忘的經驗另一回，一位老教授帶著太太，前來請求鑑定他們訂情的戒指，他們想瞭解那顆寶石的身價，以便出售，籌錢給孩子出國留學。