rock crystal
"rock-crystal" is a 11-letter English headword indexed on PlainSpell.
The verdict
“rock crystal” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 12
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A clear, colorless form of the silica-based mineral quartz.
Corpus desk
Index EN-rock-crystal · rock crystal · English
rock crystal · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 12 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "R" thin
- PHOTO-UNK Peer pending
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
| Property | Value |
|---|---|
| Headword | rock crystal |
| Language | English |
| Part of speech | Noun |
| Letters | 12 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “rock crystal” in English
Rare enough to double-check
rock crystal is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A clear, colorless form of the silica-based mineral quartz.".
rock crystal doesn't appear in our generated misspelling index, a sign its spelling follows regular English conventions. Our confusable-pair dataset has no match for it, a sign it's visually distinctive enough not to be mixed up with another word.
No explicit etymology string is stored for this entry, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is rock crystal, spelled R-O-C-K- -C-R-Y-S-T-A-L.
Definition
- 1A clear, colorless form of the silica-based mineral quartz.
Recorded use
Wiktionary examplesThese source excerpts show how rock crystal appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
[…] I have for Trials sake taken Lumps of Rock Crystal, and Heating them Red hot in a Crucible, I found according to my Expectation, that being Quench’d in Fair water, even those that remain’d in seemingly entire Lumps, exchang’d their Translucency for Whiteness […]
[…] I saw his Body, in Episcopal Robes, lying upon the Altar in a Shrine of Rock-Crystal.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.