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Boulder Opal baroque cabochon 26.5mm x 12.3mm 14.2cts
Boulder Opal baroque cabochon 26.5mm x 12.3mm 14.2cts
EMERALD 7.4x6.4 Octagonal 1.36cts Bright Green
EMERALD 7.4x6.4 Octagonal 1.36cts Bright Green
Cabochon 18x13 MALACHITE
Cabochon 18x13 MALACHITE
Cabochon 14x10 Red and Green MOSS AGATE
Cabochon 14x10 Red and Green MOSS AGATE
Tumbled Gem Mix Average 10-15mm 5kg Bag
Tumbled Gem Mix Average 10-15mm 5kg Bag
Ameritool 4/5inch Saw (220v) with 4inch Blade & Vice
Ameritool 4/5inch Saw (220v) with 4inch Blade & Vice
Cabochon Freeform Rutilated Quartz Box of 4(18)
Cabochon Freeform Rutilated Quartz Box of 4(18)
Cabochon 16x12 oval RED TIGEREYE
Cabochon 16x12 oval RED TIGEREYE
SPIRATOR VIBRO Large (Incl. Bowl)
SPIRATOR VIBRO Large (Incl. Bowl)

Kyanite crystal Blue ~2-3cms Brazil (carded)

Kyanite crystal Blue ~2-3cms Brazil (carded)
Kyanite crystal Blue ~2-3cms Brazil (carded)
Ref: 23-797
The aluminium SILICATE mineral, Kyanite (derived from the Greek 'kyanos' meaning 'blue') is used in the manufacture of spark plugs, porcelain and other refractories; it has the same chemical composition as ANDALUSITE and SILLIMANITE. It's long-bladed - (usually blue; like this one from Brazil) crystals (triclinic system) are distinctive. Hardness is 4-5 along the length of the crystal and 6-7 across it, lustre is vitreous to pearly, specific gravity is 3.5-3.7 and cleavage is perfect in one direction.
Kyanite occurs in gneisses, schists and granite pegmatites: it is an indicator of deep-seated, regional metamorphism of clay-rich sediments and it often occurs with Garnet and Staurolite in crystalline schists.
Price per crystal
1 item1.23 (1.48 Inc. VAT)view the price in UK Poundsview the price in eurosview the price in US Dollars
2 to 9 items1.23 (1.48 Inc. VAT)view the price in UK Poundsview the price in eurosview the price in US Dollars
10+0.98 (1.18 Inc. VAT)view the price in UK Poundsview the price in eurosview the price in US Dollars

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Our stock range, of around 8000 items, covers hobby and professional requirements for craft/workshop/therapy use. E & O E. Copyright: Manchester Minerals Ltd. July 2018