Gemstone of silica
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AnswerCrossword Clue
OPALGemstone of silica
OPALGemstone of hydrated silica
OPALForm of silica.
OPALSForms of silica.
OPALVariety of silica.
QUARTZForm of silica.
OPALForm of silica
FLINTForm of silica
OPALIridescent form of silica
AGATECryptocrystalline form of silica
OPALMineral made of silica
OPALMorphous form of silica.
cristobalitea variety of silica
OPALStone made of hydrated silica
cristobalitesCRISTOBALITE, a variety of silica
SINTERDeposit of silica from a geyser.
OPALIt's a form of hydrated silica
silexa form of silicon, also SILICA
silicasSILICA, a form of silicon, also SILEX
silexesSILEX, a form of silicon, also SILICA
coesitea type of silica (a form of silicon, also SILEX)
silicicof or pertaining to silica or acids derived from it
tripoliearth consisting of friable dustlike silica not of diatomaceous origin
tripolisearth consisting of friable dustlike silica not of diatomaceous origin
silicosisLung fibrosis caused by the inhalation of dust containing silica
siliceousconsisting in a noteworthy part of silica, typically quartz also SILICIOUS
siliciousconsisting in a noteworthy part of silica, typically quartz also SILICEOUS
coesitesCOESITE, a type of silica (a form of silicon, also SILEX)
tridymitean orthorhombic form of silica, in hexagonal scales, often combined in threes
rhyolitefine-grained igneous rock rich in silica: the volcanic equivalent of granite
silicificationa process whereby silica replaces the original material of a substance, eg wood
tridymitesTRIDYMITE, an orthorhombic form of silica, in hexagonal scales, often combined in threes
silicificationsSILICIFICATION, a process whereby silica replaces the original material of a substance, eg wood
borosilicateA low-melting-point glass made from a mixture of silica and boric oxide (B2O3)
borosilicatesA low-melting-point glass made from a mixture of silica and boric oxide (B2O3)
tripolian earth consisting of very friable soft schistose deposits of silica and including diatomite and kieselguhr
tripolisan earth consisting of very friable soft schistose deposits of silica and including diatomite and kieselguhr
spiculesEach of the small needlelike or sharp-pointed structures of calcite or silica that make up the skeleton of a sponge
sialsthe assemblage of rocks, rich in silica and alumina, that comprise the continental portions of the upper layer of the earth's crust
ultrabasicRelating to or denoting igneous rocks having a silica content less than 45 percent by weight, most of which are also ultramafic