Ruby (gemstone)
E916415
Ruby is a precious red gemstone, a variety of the mineral corundum, prized for its vivid color, hardness, and use in fine jewelry throughout history.
Statements (58)
| Predicate | Object |
|---|---|
| instanceOf |
gemstone
ⓘ
variety of corundum ⓘ |
| associatedWith | corundum family ⓘ |
| belongsToGroup | corundum gemstones ⓘ |
| birthstoneFor | July ⓘ |
| chemicalFormula | Al2O3 ⓘ |
| chromophoreElement | chromium ⓘ |
| color | red ⓘ |
| commonTreatment | heat treatment ⓘ |
| crystalSystem | trigonal ⓘ |
| distinguishedBy | red body color ⓘ |
| distinguishedFrom |
red garnet
ⓘ
red spinel ⓘ sapphire ⓘ |
| fluorescenceColor | red ⓘ |
| fluorescesUnder | ultraviolet light ⓘ |
| historicallyFamousLocality |
Burma
NERFINISHED
ⓘ
Mogok Valley NERFINISHED ⓘ |
| historicalMisidentificationWith | red spinel in crown jewels ⓘ |
| luster | vitreous ⓘ |
| majorSourceCountry |
Madagascar
NERFINISHED
ⓘ
Mozambique NERFINISHED ⓘ Myanmar NERFINISHED ⓘ Sri Lanka NERFINISHED ⓘ Thailand NERFINISHED ⓘ |
| mineralClass | oxide mineral ⓘ |
| MohsHardness | 9 ⓘ |
| notableUse | first working laser in 1960 ⓘ |
| phenomenon |
asterism
ⓘ
fluorescence ⓘ |
| pleochroism | distinct ⓘ |
| possibleTreatment | fracture filling ⓘ |
| primaryColorCause | Cr3+ substituting for Al3+ in corundum lattice ⓘ |
| refractiveIndex | 1.762–1.770 ⓘ |
| specificGravity | 3.97–4.05 ⓘ |
| symbolism |
love
ⓘ
passion ⓘ power ⓘ vitality ⓘ |
| syntheticProductionMethod |
flame fusion
ⓘ
flux growth ⓘ hydrothermal growth ⓘ |
| tradeTerm | pigeon’s blood ruby NERFINISHED ⓘ |
| tradeTermRefersTo | highly saturated, pure red color with slight blue tone ⓘ |
| traditionalAnniversary | 40th wedding anniversary ⓘ |
| transparency | transparent to translucent ⓘ |
| typicalInclusions | rutile needles ⓘ |
| usedHistoricallyIn |
religious artifacts
ⓘ
royal regalia ⓘ |
| usedIn |
bracelets
ⓘ
earrings ⓘ fine jewelry ⓘ necklaces ⓘ rings ⓘ |
| usedInTechnology | solid-state lasers ⓘ |
| valuedFor |
durability
ⓘ
rarity ⓘ vivid red color ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.