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 Casket (fairy tale) that (e.g. Tanyushka) are never completely "normal". Marina Balina mentioned Freud's interpretation of the motif of a double as a symbolic manifestation of death. The theme of the person leaving for the mountains at the end of his life is present in the story. Similar plot device can be found in "Two Lizards". "The Malachite Casket" is considered to be one of the best stories in the collection. The style of the story was praised. "The Malachite Casket" has been a popular subject for analysis. During Soviet times, every edition of "The Malachite Box" was usually prefaced by an essay