1. "In Lhasa and Shigatse none of the people interviewed knew of the occurrence and existence of the red feldspar in Tibet. They all
stated that they had neither seen nor heard of red feldspar found in Tibet."
2. "We found that the adhering materials on the surfaces of the rough red feldspar crystals were mainly glassy, enriched with copper and iron impurities, suggesting that the 'red feldspar' had been subjected to high temperature treatment with colouring elements added.."
3. "Based on our investigations, we find it hard to believe that there are gem grade feldspar deposits in the BaiLang and Jiangze areas
of Tibet. "
4. "In our opinion, the red feldspar samples that we collected
and recovered from the supposed mining areas during our field
investigations were deliberately planted on the ground surface and
within loose surface soil."