I’ve just bought some of the whisky stones for my father for Father’s Day – will be interesting to see what he thinks of them. One thing about the granite chillers; whilst soapstone is basically made of the mineral talc, which is very very soft (hence the soapy feel that the whisky stones and discs have), if the granite chillers are actually granite (and not a different rock – “granite” can be used as a generic term for a hard rock) then these chillers would be composed of minerals called quartz and feldspar; whilst feldspar is softer than glass, quartz is not, so there may be a slight rist of scratching of the whisky glass. This is probably a low risk, given that glass and quartz are very close in terms of hardness.

However, if you went for the ultimate bling whisky chiller, made of diamond, there would be a significant risk of scratching, although the very very high thermal conductivity of diamond means diamond chillers would cool your whisky down very very quickly, although it may not stay cool for long! Still, that’d mean you’d have to drink it fairly quickly and pour yourself another…