Mindat.org (original) (raw)
Opal-CT from
Mapimí, Mapimí Municipality, Durango, Mexico
| Locality type: | City |
|---|---|
| Classification | |
| Species: | Opal var: Opal-CT |
| Formula: | SiO2 · nH2O |
| Confirmation | |
| Validity: | Believed Valid |
| Data | |
| Mineral Data: | Click here to view Opal-CT data |
| Locality Data: | Click here to view Mapimí, Mapimí Municipality, Durango, Mexico |
| Data Identifiers | |
| Mindat Occurrence Record ID: | 817287 |
| Long-form Identifier: | 1:3:817287:7 |
| GUID (UUID V4): | 3c9ca0bb-587c-4616-bd15-3dee08ed3ea4 |
| References | |
| Fritsch, E., Gaillou, E., Ostroumov, M., Rondeau, B., Devouard, B., Barreau, A. (2004) Relationship between nanostructure and optical absorption in fibrous pink opals from Mexico and Peru. European Journal of Mineralogy, 16, 743-752 | |
| Reference Search (possible matching items) | |
 **(2005, September) Gems & Gemology Vol. 41 (3) Gemological Institute of America**Journal (issue)jewelry. The center stone in the solitaire ring is 7.02 ct; the eternity ring, the choker necklace, and the...55 ct of colorless diamonds, respectively; and the bracelet contains 3.04 ct of pink and 11.74 ct of...make fine brown diamonds such as these (0.35–1.32 ct) an important segment of the colored diamond market...many at auction, during the mid1990s. This 100.2 ct emerald cut is near colorless (I) and internally...of the highest qualities generally larger than 0.3 ct, quite often colored a distinctive strong purplish |