Week 8 - Diamonds Flashcards
Why must a luxury product remain unaffordable for the majority?
To retain its status as exclusive and desirable.
What are the main reasons people buy diamonds?
Symbols of success, social status, and love.
How has marketing influenced diamond demand?
Advertising campaigns create desire and reinforce societal expectations (e.g., engagement rings).
What was the significance of the “A Diamond is Forever” campaign?
It linked diamonds to emotions, eternity, and exclusivity.
Why are diamonds not considered a commodity like metals?
Each diamond is unique and valued based on the 4Cs.
Name five major diamond-producing countries.
Russia, Botswana, Canada, Australia, South Africa.
What are the two main types of diamond deposits?
Primary (Kimberlite/Lamproite pipes) and Secondary (Alluvial deposits).
What are the conditions needed for diamond formation?
Depth of 140–200 km, pressure >45,000 atm, temperature >950°C.
How do diamonds reach the surface?
Carried by Kimberlite and Lamproite magmas during deep volcanic eruptions.
How do Kimberlite and Lamproite differ?
Kimberlite was initially thought to be the only diamond host; Lamproite was later discovered to also contain diamonds.
What are the 4Cs of diamond valuation?
Colour, Clarity, Carat, and Cut.
What is the difference between a synthetic and a simulant diamond?
Synthetics have the same properties as natural diamonds; simulants look like diamonds but have different properties.
What are the two main methods for creating synthetic diamonds?
HPHT (High Pressure High Temperature) and CVD (Chemical Vapour Deposition).
How do scientists determine the age of diamonds?
By dating mineral inclusions trapped inside the diamonds.
How do secondary (alluvial) diamond deposits form?
Diamonds eroded from primary sources are transported by rivers and streams.
What methods are used to locate diamond deposits?
Geophysical surveys (magnetics, gravity, seismic), geochemical sampling, and drilling.
What is an indicator mineral, and why is it important in diamond exploration?
Minerals like garnet, ilmenite, and chromite, which are associated with Kimberlite and help geologists trace diamond sources.
What conditions can destroy diamonds in the Earth’s interior?
High oxygen environments can convert diamonds into graphite.
