This can certainly be implemented - but you can do that yourself with a small lite-C script.

If you want us to implement it, our policy is as follows: if evidence exists that an indicator is useful, we normally implement it on request for the next version. If however the indicator is not backed by any evidence or rational basis, we can implement it nevertheless, but then you have to pay for it.

There are some working pattern trading methods, but diamonds, as to my knowledge, belong to the realm of the irrational.