BabelNet

bn:00059057n

Noun Concept

Categories: Opals, National symbols of Australia, Hydrates, Emblems of South Australia, Glass in nature

opal boulder opal Ceraunium Chloropal Ethiopian welo opal

A translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones WordNet 3.0

Definitions

Relations

Sources

A translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones WordNet 3.0 & Open English WordNet

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%. Wikipedia

Gemstone. Wikipedia Disambiguation

Silica mineral Wikidata

A mineraloid gel which is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl and basalt. OmegaWiki

A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula SiO2·nH2O. Wiktionary

A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity. Wiktionary (translation)

IS A

mineral

opaque gem

mineral species

dioxosilicate minerals

HAS KIND

HAS INSTANCE

Fire of Australia opal

CRYSTAL SYSTEM

amorphous solid

DERIVATION

opalize

DESCRIBED BY SOURCE

Brockhaus and Efron Encyclopedic Dictionary

Explanatory Dictionary of the Living Great Russian Language

The Nuttall Encyclopædia

Encyclopædia Britannica 11th edition

NAMED AFTER

gem

STREAK COLOR

white

WordNet 3.0 & Open English WordNet

opal

Wikipedia

opal

Wikidata

opal

Wiktionary

opal

OmegaWiki

opal

Wikipedia Redirections

boulder opal, Ceraunium, Chloropal, Ethiopian welo opal, lussatite, opal mines, opal mining, opal triplet, opalized, opals, Synthetic opal, Wello opal, Welo opal, wood opal