why there is yellow patches seen in some granite?

[sam_m400]

So my question is 1. Is it that it won't appear in all the granites except few which are exposed to air?. If we reject those pieces taking a fresh lot without patches does it come in the future. Those sales guys saying it will not come ,is it true?

When i inquired and seen that very few ones has those patches,and those guys claimed there used to be 50 varieties of granites used to come from TN which has been stopped. There was great demand and many people used to take ,and there is no issues of this problem ,if so it they may not even taken those granites rocks at all. I have seen plenty of old stock from TN lying and granite people are waiting to open as mostly TN,andhra ,Bangalore are mostly stone which now 80% available as mostly from North are exported which are costly and not available mainly here. Price i have inquired as it starts from 220 to 240 range only as i visited Hindustan marbles.

[ardesarchitects]

Hi,
Yellow patches in granite are due to iron content.Its not true that "once you lay the yellow patches wont show up".Yellow patches can happen even after 10 years of laying or in one year itself.
Most of the light shade granite has this problem ,i am not sure of tamilnadu /ap/ karnataka granite iron content .There is no way you can remove yellow patch once it forms

Think twice before you opt for light color granite.

Regards

Ar.Praveen.N
Ardes Architects and Interior Designers
www.ardesarchitects.com
ardesarchitects@gmail.com

[sam_m400]

Thanks ,then is yellow color is considered as light or dark?. I am going for yellow color granite ,not sure which category yellow falls. I know black,red etc are dark colored ,and white,grey etc are light colored but what about yellow

[m3_07]

Friends....if someone is interested in gangsaw slabs, visit TAB INDIA @ Hosur. It is one of the biggest IMPEX units in TN & they have a wide variety to choose form 160/ SFT to 2K/ SFT. Visit them even if you are not interested to buy one, it helps in getting to know the stone better.

PS: They do sell 40mm 1SFT tiles too.