Malachite green (LMG) is used as a detection method for latent blood in forensic science. Hemoglobin catalyzes the reaction between LMG and hydrogen peroxide, converting the colorless LMG into malachite green. Therefore, the appearance of a green color indicates the presence of blood. In 1992, Canadian authorities determined that eating fish contaminated with malachite green posed a significant health risk. Malachite green was classified a Class II Health Hazard. Due to its low manufacturing cost, malachite green is still used in certain countries with less restrictive laws for non aquaculture purposes. In 2005, analysts in Hong Kong found traces of malachite green
The Malachite Box "The Mistress of the Copper Mountain" and "The Malachite Casket", was created by Dmitry Batin. Two filmstrips were released, "The Fire-Fairy" (1956) and "The Malachite Box" (1972). "The Stone Flower" was adapted for stage many times. The first ballet of the same name was created by Alexander Fridlender in 1944. The opera in four acts "The Stone Flower" by Kirill Molchanov premiered on 10 December 1950 in Moscow at the Stanislavski and Nemirovich-Danchenko Music Theatre. Sergey Severtsev wrote the Russian language libretto. It was the first opera of Molchanov. The role of Danila (tenor) was sung by Mechislav Shchavinsky, Larisa