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 Fairy Tale" (), based on "The Mistress of the Copper Mountain". Based on "Marko's Hill", Klara Katsman created the operetta "Mark Beregovik" (), which premiered in Sverdlovsk in 1955. Lyubov Nikolskaya composed the children's opera "Silver Hoof" based on the story of the same name in 1959. Vladimir Goryachikh composed the ballet "The Living Stone" () based on "Sinyushka's Well", which premiered in Nizhny Tagil in 1965. The 1973 opera "The Fire Maid" (based on "The Fire-Fairy") for schools was composed by Robert Long, with story adapted and lyrics by Dorothy Gulliver The 2012 opera "The Malachite Casket", based on