The Red Sapphire

When her gem-dealer father is found drowned in a flooded pit outside Ratnapura, London gemmologist Nila Wickramasinghe refuses to believe it was an accident — especially when his greatest stone surfaces in a Geneva catalogue under a false name. From the gem markets of Bangkok to the hushed sale rooms of Geneva and the vaults beneath Hatton Garden, she follows a trail of forged certificates and polite lies towards people who will kill to decide where a stone was born.