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Part-1 History Of Opals
Part-2 Opal Creations
Part-3 Types Of Opals
Part-4 Fossilized Opal
Part-5 Valuing Opals
Part-6 Mining Opals
Part-7 Taking Care of opals
Part-8 Identifying Opal Inclusion Or Fracture ?
Part-9 Opal Dictionary
Part-10 Faq
Online Test
Contact Us
Home
About us
Our Courses
Part-1 History Of Opals
Part-2 Opal Creations
Part-3 Types Of Opals
Part-4 Fossilized Opal
Part-5 Valuing Opals
Part-6 Mining Opals
Part-7 Taking Care of opals
Part-8 Identifying Opal Inclusion Or Fracture ?
Part-9 Opal Dictionary
Part-10 Faq
Online Test
Contact Us
TEST
Please Submit Your Answers To Get Certificate
Welcome To Your Test
The loss factor when cutting black and boulder opal is:
95%
5%
97%
50%
Lightning Ridge is home to the:
Boulder Opal
Crystal Opal
White opal
Black opal
Black opal forms in:
Iron Oxide
Magnesium Oxide
Potch
Both A & C
The area in Australia that holds the 3 major Mining fields is:
The great barrier reef
The great artesian basin
Lightning Ridge
Coober Pedy
Opal is formed from a mix of water and:
Silicone
Sand
Silica
Sandstone
Who discredited opal by naming it a ‘badluck’ gemstone:
Queen Victoria
Ancient Romans
De Beers
Queen of Spain
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