GEMSTONES Flashcards
are minerals, rocks, or organic matters that have been chosen for beauty,durability,and rarity
gemstone
A few noncrystalline materials of organic origin (e.g., pearl, red coral, and amber)
gemstone
- The discovery of gemstone resources in Sibalom and San Remigio, Antique and San Joaquin,
Iloilo - Paved the way for the establishment of the smallscale gemstone industry in Aklan, Panay
Island
1982
A geological survey team of MGB Iloilo Regional Office proved the existence of a sizeable
volume of semi-precious stones/gemstones
1984
Three-year special project on livelihood by MGB Iloilo
January 1996- December 1998
Jade global occurrence
Kachin, Hpakant, Myanmar
Jasper global occurrence
Marble Bar, Australia
Opal global occurence
Quilpe Opal Fields, Queensland, Australia
Opal local occurrence
Burgos, Ilocos Norte
Gemstone uses
For jewelry and decorative materials
- Found in place where they originally formed
- Occur as dissemination, veins, dikes,
lenses, or beds within various rock types
Primary deposits
- Found away where they were originally formed
- Occur as alluvial riverbed, flood plain, or beach deposits
Secondary deposits
- Diamond, Ruby, Sapphire, and Emerald
- Yet to be discovered in the country
Precious stones
Other remaining gemstones
Semi-precious stones
Sitio Banga, barangay
Babuyan, Sta. Cruz, Zambales
Zambales Jade