Diamond Cutter is a contemporary showpiece that utilizes percussive articulation and rapid textural shifts. Its distinctiveness arises from the aggressive use of dissonance contrasted with fluid, technical motor-rhythms.
At Henle 5 this is a late-intermediate piece — technically substantial, with musical demands to match. The main demands: fast passage work that stays light and even at tempo; precise articulation — the difference between crisp and blurred is the piece; and sharp dynamic and character contrasts held together in one arc.
Beyond that, expect fine finger independence within the hand.
The primary technical hurdle is the maintenance of even finger-articulation through dense, fast-moving passages.
Comparable difficulty and character — good candidates for what to learn next.
A level or two down with the same spirit — ideal if this piece is still out of reach.
Where this piece's skills lead: slightly harder works making similar technical demands.
Diamond Cutter is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 8.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Diamond Cutter lasts about 4 minutes.
Diamond Cutter is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Ballade No.2 for Piano by Richard St. Clair, Ballade No.1 for piano by Richard St. Clair, Alexander's Ragtime Band by Irving Berlin — see the full similar-pieces list on this page.