Book "Petersburg jewellers of XIX - XX began in". it is the last part of trilogy about masters of jeweller business, written with a connoisseur and researcher of this wonderful type of art, research worker of the Hermitage, candidate of study of art by Lily by Konstantinovna Кузнецовой. The feature of her works, doing their quite unique, is that every thing is examined not only from the point of view of attribution and description, but in context of history, fates of master and proprietors. To none of specialists in area of this jeweller art, doing was not succeeded. The magnificent knowledge of history, chemistry, геммологии, technologies,, multiplied on long-term labour and selfless devotion to the business, resulted in a brilliant result. Plus unique style of exposition - vivid, bright. A reader involuntarily submerges in the past, in court and fashionable life, appears in master jewellers. But here is maximum exactness, support only on facts. A book is distinguished by a vast, in detail worked out scientific vehicle. Therefore both an experience art critic and simple reader will find in her something new and interesting for itself.