I think red jadeites has so many hues which gradates in tones . Red , yellows , browns and oranges . All belong to the same family I was told , while having a chat with the gemologist once .
To have a completely, uniformly evenly red / yellow or oranges, untreated pieces of jadeite is fairly expensive.
Because red/yellows / oranges / browns tends to occur near upper crust / portions of jade border .
As such. Due to these properties of red jade . Some jade vendors have used modern technology to intensify the color of red jade through heat treatment to intensify the color.
Although heat treatment doesn’t cause the internal structure of jadeite to change ( they are still technically Grade A )
However the heat will cause the jade to become intensified in its shade , and become brittle and dry .
It is not easy to distinguish however , if heat is due to nature as in if red jadeite is mined near volcanic lava existing areas , natural heat from the ground does have its bearing in creating natural specimens that intensify its iron elements ( creating its redder shades )
This is nature .
However , artificial means , of heating up Red jadeite boulders likely dumping the bouldercan create this effect .
But , a trip to the gemologist will help . Although there are no current methods to give an outright answer what kind of heat treatment or if any is subjected to . It’s very doubtful a gemologist will give a Grade A to red jade without first including some remarks about its brittle or dry state . If it is heat treated , it’s likely not to have the moist, shiny appearance but that with pits and surface cracks.