KURU GREY
(or Baltic King) Finely structured, non-foliated and equigranular granite which is prominently gray in colour, but the tone may vary between quarries. The stone can be used for indoor and outdoor applications, and it is a very suitable raw material for quarry stone production.

Colour variation: minor
Weather resistance: good
Abrasion resistance: good
Quarry location: Kapee, Tampere (Finland)
Beginning of quarrying: early 1950s
Number of quarries: 2
Exporting countries: Sweden, Norway, Poland, Japan, China, England, Denmark

Technical properties
density 2,660 kg/m³
water absorption 0.11%
compression strength 300 mPa
flexural strength 25 mPa
hardness 6.1 Mohs

Mineral composition
Potassium feldspar 36%
Plagioclase 21%
Quartz 35%
amphibole, mica 8%

Polished
Matte polished
Flamed
Bush hammer finished
Split block