Contact RockHoundry

RockHoundry is a small, independent, ad-supported site — there is no support desk standing by, but a real person reads everything that comes in to support@colemanite.com.

A few things this address is genuinely useful for: a calculator that gave you a result you think is wrong (say which tool — the Mohs hardness estimator, specific gravity calculator, crystal system identifier, tumbling grit schedule calculator, UV fluorescence guide, or specimen weight & size estimator — and the values you entered); a tool you wish existed on the site; an error or unclear step in the blog, learn section, or the museum; or a bug in how a page looks or behaves on your device.

There’s no fixed response time to promise, and no ticket number or live chat — email is read and handled as it comes in. RockHoundry does not identify, appraise, or value specimens for sale, insurance, or investment purposes; for that kind of question, a local rock and mineral club or a qualified gemologist will serve you far better than this site can. RockHoundry provides general-purpose calculators and field-craft explanations, not a lab identification or an appraisal service.

Before writing in about a tool result, it’s worth double-checking the numbers you entered — a mixed-up unit, a weighing done with the specimen still wet, or a mistyped value is the most common source of a surprising answer. If it still looks off after that, that’s exactly the kind of message worth sending.