When naming the natural jewellery and jade to be imitated, it should be prefixed with the word “imitation”, such as “imitation emerald”, “imitation pearl”, 等. The use of imitation gems does not represent the specific category of jewelry and jade. The name of the specific jewelry and jade should be given as much as possible, and the following expressions should be used. Such as: “ガラス” または “imitation crystal (ガラス)”.
When the expression “imitation of a certain jewellery jade” (for example, “imitation diamond”) is used as the name of a jewellery jade, it means that the jewellery jade:
(1) It is not the imitated jewel and jade (for example, “imitation diamond” is not a diamond).
(2) There are many possibilities for specific imitation materials (such as “imitation diamond”: it may be glass, synthetic cubic zirconia or crystal, 等).
“Imitation” is of course different from “true”. 実際には, it clearly tells you: it is just an imitation of the gemstone.
The common special optical effects of jewellery and jade are cat’s eye effect, star effect, discoloration effect and so on.
When naming a gem with a cat’s eye effect, you can add the word “cat’s eye” after the basic name of the jewellery and jade, such as “apatite cat’s eye”. Only “Golden Emerald Cat’s Eye” can be directly called “Cat’s Eye”.
When naming gems with starlight effect, you can add the word “starlight” before the basic name of jewels and jade, such as “starlight ruby”. The method of naming synthetic gems with starlight effect is to add the four characters “synthetic starlight” before the basic name of the corresponding natural jewelry jade, such as “synthetic starlight ruby”.
When naming gems with a color-changing effect, you can add the word “color-changing” before the basic name of the jewellery jade, such as “color-changing garnet”. The method for naming synthetic gems with color-changing effect is to add the four words “synthetic color-changing” before the basic name of the corresponding natural jewelry jade, such as “synthetic color-changing sapphire”.
Except for starlight effect, cat’s eye effect and discoloration effect, all other special optical effects that appear in jewellery and jade, such as placer gold effect, halo effect, 色の変更効果, 等, do not participate in the naming, but can be noted in the remarks.