Order of King George Tupou I
The Royal Order of King George Tupou I is a knighthood order of the Kingdom of Tonga.

History 
The Order was established between 1876 and 1890 by King George Tupou I  as a general reward for meritorious services to the kingdom.

Classes 
The Order consists of three classes:
 Knight Grand Cross - Star & badge from a sash
 Knight Commander - Star, badge from a necklet ribbon
 Commander - Breast badge from a ribbon

The post-nominal letters of the three classes (from highest to lowest) are respectively K.G.C.G.T., K.C.G.T. and C.G.T.

In 2008 King George Tupou V declared the classes of Knight Commander and Commander obsolete.

Insignia

Knight Grand Cross 
The Star is a 90mm 8-pointed silver, silver-gilt & enamel faceted Star with four silver Tongan crowns on the main points, (in the North, South, East & West). The white enamel central medallion has the national coat of arms in the centre, the red riband has the gold capital letters  KOE  'OTUA MO TOGA KO HOKU TOFi'A. (the wrongly spelt motto due to a manufacturing error – "God and Tonga Are My Inheritance"), there is a small 5-pointed gold star in the base of the riband (reversed, i.e. one point downwards).

The ribbon is a 102mm red moiré sash is with two white stripes (18/22.5/21/22.5/18mm)

Knight Commander 
The star (approx. 90mm) is a 7-pointed silver, silver-gilt & enamel faceted Star (with one point downwards), on top of the riband is a gilt crown. The central medallion & riband are as above.

The necklet badge (approx 60mm without the crown) is a silver, silver-gilt & enamel 6-pointed faceted star with two points upwards, suspended by a silver-gilt Tongan crown. The central medallion & riband are as above.

The necklet ribbon is approx. 41mm wide, red with three white stripes (2.5/6/9/6/9/6/2.5mm)

Companion 
The breast badge is a similar faceted star as the Knight Commander (above) except that the white central medallion has the shield from the coat of arms in the centre.

The breast ribbon is approx 38mm wide, red with two white stripes (6/8/10/8/6mm)

References

Orders, decorations, and medals of Tonga