The "Mona Lisa" has given up a secret. Scientists used X-rays to peer into the chemical structure of a tiny speck of the celebrated work of art. They came up with a new insight into the techniques used by Leonardo da Vinci when he painted his portrait of the woman with the enigmatic smile. Research published Wednesday in the Journal of the American Chemical Society says the oil-paint recipe he used as his base layer had a distinctive chemical signature. A rare compound in Leonardo's first layer of paint suggests the famously inventive Italian Renaissance master may have been in an experimental mood when he started the "Mona Lisa" early in the 16th century.
A German court has convicted five men of breaking into a Dresden museum and stealing 21 pieces of jewelry containing more than 4,300 diamonds. The defendants received prison sentences, and the longest was six years and three months, German news agency dpa reported. The Dresden state court ruled that the five were responsible for the theft of the 18th century jewelry from the Green Vault Museum on Nov. 25, 2019. Officials said at the time that the stolen items included a large diamond brooch and a diamond epaulet. The crime was considered one of Germany's most spectacular jewelry heists in recent history. The pieces taken had a total insured value of at least $129 million.