Specifications

Color filter/Filter
-made by high quality optic glass
-color never fade ,no degumming
-frosting aluminium alloy crust

Gemstone color filter,Chelsea filter

- with high quality optic glass;

- excellent spectrlite color filter;fastness and non-lackness;

- frosting aluminum alloy crust,delicateness and top quality;

- black color and leather package.

 

The Chelsea Filter is a tool that helps confirm what something is NOT. It can not identify what something is. Use it with reservation, as all reactions should be confirmed with other more reliable gem identification instruments.

Stone	Reaction
Green Stones
Alexandrite	Red
Aquamarine	Distinctly Green
Aventurine Quartz	Reddish
Chrome Chalcedony	Red
Chrysoprase	Green
Emerald (some Emeralds from South Africa and India may not show a Red hue, but remain Greenish)	Pink to Red
Glass (Paste)	Green
Jadeite	Green
Peridot	Green (Aqua Blue)
Sapphire	Green
Soude Emerald (the old type Soude emerald may show red)	Green
Stained Jadeite	Red
Zircon	Reddish
Red Stones
Garnets, dark red, no fluorescence	Red
Glass, paste, no fluorescence	Reddish
Spinel, fluorescent	Red
Blue Stones
Aquamarine	Distinctive Green
Sapphire, blackish (The Blue sapphire which shows a Purple color under artificial light, usually shows Red under the filter)	Green
Spinel	Reddish
Zircon	Greenish
Purple Stones
Violet Sapphire	Bright Red