diamonds
...that diamonds have been known in India for at least 3000 years, but most likely 6000 years?
...that <b id="mwFJU"><a href="./Diamond_(gemstone)" id="mwFJY" rel="mw:WikiLink" title="Diamond (gemstone)">diamonds</a></b> have been known in <a href="./India" id="mwFJc" rel="mw:WikiLink" title="India">India</a> for at least 3000 years, but most likely 6000 years?