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Manchester Minerals have marketed quality rough and cut gemstones and jewellery making equipment, at competitive trade prices, since 1972. Most orders placed before 1.00pm are despatched the same day.

ICELAND SPA Calcite (Carded avge 3cms)

ICELAND SPA Calcite (Carded avge 3cms)

Ref: 23-779

The name 'Iceland Spar' relates to the clearest transparent 'crystals' of the common mineral 'Calcite'. The characteristic rhombohedral crystal shape is clearly shown in this 'cleaved' (split with a sharp blade) specimen. Exibiting the light transmission property of 'double-refraction' (bi-fringent), it will be seen that transmitted images (such as the line under this specimen) show a doubling which is particularly obvious if the crystal is rotated over the image.
Calcite usually forms as 'massive' blocks from which these rhombs can be cleaved or as 'nailhead' or 'dogtooth' crystals. This specimen is from Mexico. Average 3cms
Price:

(1 item) 3.79 (4.55 Inc. VAT) view the price in UK Poundsview the price in eurosview the price in US Dollars
(2 to 9) 3.79 (4.55 Inc. VAT) view the price in UK Poundsview the price in eurosview the price in US Dollars
(10+) 2.84 (3.41 Inc. VAT) view the price in UK Poundsview the price in eurosview the price in US Dollars