Made in an unusual blue tone, this beautiful hand blown glass tumbler is designed to deliver some colour. The colour Mineral Blue is taken from Blue John (also known as Derbyshire Spar) a semi- precious mineral, a form of fluorite with bands of a purple-blue. Lighter and finer, they echo the shape of our tumblers and are designed for every-day dining. Mix and match, and get ready to set the table with our artisan-madeglasswares. Hundreds of tiny air bubbles in the glass create a light, bubbly effect and add to the uniqueness of this charming range and now a part of a larger, tableware collection of bowls, plates and tumblers. Packed in our simple crisp, Kraft card boxes with 1 colour print so they are easily recyclable.250 ml capacityDishwasher (domestic) safe85 mm D x 135 mm H* Important Mineral Blue Colour NoteThe density of the colour and the bubble intensity will vary from item to item, this is a natural part of their handmade production process and charm.Jade and Mineral Blue items owing to the richer darker pigments used will have fewer bubbles than the other colours although they are still a beautiful mouth-blown item and fit perfectly in this collection.