Detail Whole Slab
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Raw Silk

The close-up view of each stone type shows a relatively true image of the crystalline structure and the colouring. This is suitable for grained slabs to a limited extend only. In regard to the colour matching, please take an original sample of the stone from your furniture store as a basis.


This is a mixture of pale to blood-red alkali feldspar, grey, transparent quartz and noticeable little black biotite-mica, in places as chloride (then coloured green). The minerals are mostly direction oriented. Therefore, this rock has to be called gneiss. 


The rock has been generated under high pressures and temperatures in the deeper regions of the earth crust and has been uncovered by erosion of the covering mountain range over hundreds of millions of years.

Hardness Hard Stone
Structure Type Slab with Irregular Pattern
Synonyms Indian Juparana Ivory, Ivory Orange, Seta Cruda
Group Metamorphite
Petrographic Assignment Gneiss
Age 570 Million years (Pre-Cambrian)
Colouring Minerals Pink alkali feldspar (coloured by reddish hematite)
Average Hardness 6-7 (according to Mohs's hardness scale 1-10)
Deposit India, Mandurai