| commodity | opal |
| class_a | 1e+07 |
| class_b | 1e+06 |
| class_c | 100000 |
| class_d | 10000 |
| unit | ct |
| name | Opal (gemstone) |
| description | Opal is a hydrated amorphous form of silica; its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid - http://en.wikipedia.org/wiki/Opal |
| url | http://inspire.ec.europa.eu/codelist/CommodityCodeValue/opal |
| commoditygroup | preciousAndSemiPreciousGemstones |
| red | 0 |
| green | 180 |
| blue | 186 |
| crm_2020 | null |
| commoditygroup_e_myb | Gemstones (other than diamond) |
| commodity_and_e_myb | Gemstones (other than diamond) |
| subcommodity_and_e_myb | Opal |
| commodity_portal | Opal |