| Cover | Dec. 12, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 12, 2024 |
| Entity File Number | 001-41022 |
| Entity Registrant Name | Rigel Resource Acquisition Corp |
| Entity Central Index Key | 0001860879 |
| Entity Tax Identification Number | 98-1594226 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | 7 Bryant Park |
| Entity Address, Address Line Two | 1045 Avenue of the Americas |
| Entity Address, Address Line Three | Floor 25 |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10018 |
| City Area Code | (646) |
| Local Phone Number | 453-2672 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
