Jadeite filters can be helpful, but are not reliable for determining the identity of a stone. We find them useful when we have looking at a parcel of stones. You can use a jadeite filter to quickly find any stones that are "not like the others."
Some Jadeite Filter Reactions
GREENS
Alexandrite:Red
Aquamarine: Distinctly Green
Aventurine Quartz: Reddish
Chrome Chalcedony: Red
Chrysoprase: Green
Demantoid Garnet: Reddish
Emerald: Pink to Red
Enstatite: Green
Fluorite: Reddish
Glass (Paste): Green
Hiddenite: Slight Pink
Jadeite: Green
Peridot: Green (Aqua Blue)
Sapphire: Green
Stained Bowenite: Red
Stained Chalcedony: Red
Stained Jadeite: Red
Synthetic emerald: Strong Red
Synthetic Sapphire: Red
Synthetic Spinel: Red
Tourmaline: Green (Chrome tourmaline:might be Red)
Tsavorite Ganet: Red
Uvarovite Garnet: Pink
Zircon: Reddish
REDS
Garnets, dark red, no fluorescence Red
Garnet topped doublet , no fluorescence Dark Red
Glass, paste, no fluorescence Reddish
Ruby, natural and synthetic, strong fluorescence The natural and synthetic sapphire are indistinguishable under the color filter) Red
Spinel, fluorescent Red
Spinel, synthetic, fluorescent ( pink synthetic spinel does not show a red color through the filter)
Red
BLUES
Aquamarine Distinctive Green
Garnet topped doublet Greenish-blue
Glass, paste, dark blue Red
Glass, paste, light blue Greenish
Lapis lazuli Weak brownish red
Sapphire, blackish (The Blue sapphire which shows a Purple color under artificial light, usually shows Red under the filter) Green
Sodalite Slightly brownish
Spinel Reddish
Spinel, colored by cobalt Red
Swiss lapis, greenish-blue Greenish blue
Synthetic sapphire (The natural and synthetic sapphire are indistinguishable under the color filter) Dark Greenish Blue
Synthetic Spinel,dark blue Red
Synthetic Spinel, light blue Orange
Synthetic Spinel, zircon color Orange to Red
Synthetic Spinel, lapis lazuli color Bright Red
Zircon Greenish
PURPLES
Amethyst: Reddish
Violet Sapphire: Bright Red
Source for reactions: Gemology Online, Barbra Voltaire
The Chelsea Filter