Jean-Baptiste L. Romé de l'Isle

Jean-Baptiste Louis Romé de l'Isle (26 August 1736 – 3 July 1790) was a French mineralogist, considered one of the creators of modern crystallography.

Romé was born in Gray, Haute-Saône, in eastern France.

As secretary of a company of artillery in the Carnatic Wars he visited the East Indies, was taken prisoner by the English in 1761, and held in captivity for several years.

[2][1] His formulation of the law of constancy of interfacial angles built on observations by the geologist Nicolaus Steno.

[citation needed] In 1775, he was elected a foreign member of the Royal Swedish Academy of Sciences.

Statue of Jean-Baptiste Romé de l'Isle at the city hall of his birthplace, Gray, Haute-Saône
Cristallographie , 1783