I see that toward the end of the article by Thapa and Pandey:
showing superconductive gold / silver "colloid", there IS indeed claimed evidence of the Meissner effect:
"Further, we observed that pellets of suchsamples are significantly diamagnetic (Chi sub nu = minus 0.037) under ambient conditions
(Figure 4d), consistent with the existence of a superconducting state at room temperatures"
[However, "Figure 4d", is unfortuantely not apparent in this transcript]