Provenite

Lục Yên District

AreaDraft data

22.0830° N, 104.7500° E · Region only

Aquamarine from Yên Bái, Vietnam, with photos of specimens from this locality.

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Minerals found here

Aquamarine

Aquamarine at Lục Yên District

Doubly terminated, saturated blue gem aquamarine crystal 5.7 cm long from Luc Yen, Yen Bai, Vietnam.
Doubly terminated, saturated blue gem aquamarine crystal 5.7 cm long from Luc Yen, Yen Bai, Vietnam.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Second view of the doubly terminated aquamarine crystal from Luc Yen, Vietnam.
Second view of the doubly terminated aquamarine crystal from Luc Yen, Vietnam.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Three gemmy terminated aquamarine crystals up to 3.6 cm from Luc Yen, Vietnam.
Three gemmy terminated aquamarine crystals up to 3.6 cm from Luc Yen, Vietnam.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Gem aquamarine crystal with a flat termination from Luc Yen, Vietnam.
Gem aquamarine crystal with a flat termination from Luc Yen, Vietnam.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Formula
Be₃Al₂Si₆O₁₈
Morphology
Terminated prismatic gem crystals, some doubly terminated, with silky surfaces
Typical size
About 2.5-6 cm
Color / luster
Saturated blue
Surface features
Silky prism faces
Availability
Unknown

Sources: SRC-759

About Aquamarine →

Geology of the locality

Setting
Gem-mining district with many quarries for ruby, spinel and tourmaline
Region
Yên Bái
Country
Vietnam

District of about 811 km2; coordinate is the district reference point from Wikipedia.

Sources: SRC-758

Sources

  1. SRC-758 · Website
    Lục Yên districtWikipedia contributors · Wikipedia
  2. SRC-759 · Website
    File:Beryl-131589.jpgRobert M. Lavinsky · Wikimedia Commons

Draft data from the Provenite workbook. Check entries against the cited sources before relying on them. Photos are open-licence images from Wikimedia Commons; the author and licence are given with each photo.