One note, one pearl, and one family secret.
Miss Loralai Gemquist, the 23-year-old daughter of famed gemologist Jacob Gemquist and granddaughter of Lord Bramwell Gemquist, The Baron of Aethleton, thought that her life couldn't get more difficult than surviving the London Season and the schemes of her match-making aunts. But when she discovers an anonymous note, her life will never again be the same. Thrust into a world of shadows, secrets, and intrigue, she'll be forced to use all her wits, intellect, and knowledge of gemstones as she tries to prevent a war when a priceless, Chinese pearl is stolen. Along the way, she'll meet some unexpected allies and make some dangerous enemies as she learns who she can trust, but just one false step and it will be more than her life on the line.
The first in a late-Regency/pre-Victorian series where a jeweller finds herself swept up into a world of international espionage, secret societies, and, perhaps, even finds a hint of romance.