DERBYSHIRE BLUE JOHN
Derbyshire Blue John is one of England’s most rare and beautiful gemstones. It is a member of the fluorite family and is well known for its distinctive bandings of colour with traces of golden yellow iron stain. Blue John can only be found in one hill, about three quarters of a mile west of the small town of Castleton in Derbyshire. Different parts of the hill are characterised by different patterns of colour banding in the Blue John, these are known as ‘veins’ and there are at least 14 different veins of Blue John available.
Blue John was created 290 million years ago after remote volcanic activity forced a mixture of minerals and very hot water into gaps and faults hidden deep within ancient limestone rock. When this chemical mixture began to cool, it would crystallise out into the gaps and form into the gemstone.
ABOUT GARMIN
Always referring back to their motto 'built to last' every process involved in designing and making a Garmin watch takes place in-house. Having complete control over every stage, the brand that is admired worldwide can ensure high quality, precision and innovative features.
Committed to navigation, Garmin are proud of their contribution to navigation designing timepieces for the outdoors, sports, aviation, marine and automative. Athletic types are fond of the Garmin running watches and adventurers adore the Garmin GPS watches.
Their key collections include the Garmin Fenix 5, the Garmin Vivoactive 3, the Gramin Vivomove, the Garmin Tactix Charlie and the Garmin Instinct.
