Emeralds
E43698
Emeralds are precious green gemstones, a variety of the mineral beryl colored by trace amounts of chromium or vanadium, highly valued in jewelry for their rich hue and rarity.
Observed surface forms (2)
| Surface form | Occurrences |
|---|---|
| Emerald | 0 |
| Beryl family | 1 |
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Gemstone
ⓘ
Precious stone ⓘ Variety of beryl ⓘ |
| associatedAnniversary |
20th wedding anniversary
ⓘ
35th wedding anniversary ⓘ 55th wedding anniversary ⓘ |
| birthstoneFor | May ⓘ |
| chemicalFormula | Be3Al2(SiO3)6 ⓘ |
| clarityCharacteristic | Frequently included ⓘ |
| color | Green ⓘ |
| coloringElement |
Chromium
ⓘ
Vanadium ⓘ |
| commonCut |
Emerald cut
ⓘ
Step cut ⓘ |
| crystalSystem | Hexagonal ⓘ |
| distinguishedFrom |
Aquamarine
ⓘ
Beryl ⓘ
surface form:
Heliodor
Morganite ⓘ |
| hardnessOnMohsScale | 7.5–8 ⓘ |
| historicalAssociation |
Pharaonic Egypt
ⓘ
surface form:
Ancient Egypt
|
| luster | Vitreous ⓘ |
| majorSourceCountry |
Afghanistan
ⓘ
Brazil ⓘ Colombia ⓘ Ethiopia ⓘ Pakistan ⓘ Russia ⓘ Zambia ⓘ Zimbabwe ⓘ |
| marketCategory | Colored gemstone ⓘ |
| memberOf |
Emeralds
self-linksurface differs
ⓘ
surface form:
Beryl family
|
| mineralGroup | Beryl ⓘ |
| opticalPhenomenon | Pleochroism ⓘ |
| pleochroicColors |
Bluish green
ⓘ
Yellowish green ⓘ |
| rarityComparedTo | More rare than diamond of similar size and quality ⓘ |
| refractiveIndex | 1.565–1.602 ⓘ |
| specificGravity | 2.67–2.78 ⓘ |
| symbolism |
Fertility
ⓘ
Love ⓘ Prosperity ⓘ Rebirth ⓘ Wisdom ⓘ |
| transparency | Transparent to translucent ⓘ |
| treatment | Often oil-treated to enhance clarity ⓘ |
| typicalInclusions |
Fractures
ⓘ
Three-phase inclusions ⓘ |
| typicalUse | Jewelry ⓘ |
| valuedFor |
Rarity
ⓘ
Rich green hue ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Emerald
this entity surface form:
Beryl family
subject surface form:
Diamonds