For hundreds of years. deBeers diamond mining keeps vaults full of diamonds to keep the prices nice and high, rather than selling all of them. (Which would bring the prices far down.)
There are diamonds in many places that have not been considered for mining.
Coal reserves are expected to last for approximately 150 years at current consumption rates. However, this estimate can vary depending on factors such as advancements in technology, changes in consumption patterns, and the discovery of new coal reserves.
For hundreds of years. deBeers diamond mining keeps vaults full of diamonds to keep the prices nice and high, rather than selling all of them. (Which would bring the prices far down.) There are diamonds in many places that have not been considered for mining.
The duration of mineral reserves can vary greatly depending on factors such as demand, extraction technologies, and new discoveries. It is difficult to predict an exact timeframe for how long reserves will last, but estimates are typically given in decades to centuries for most minerals. Continued exploration and sustainable mining practices can help extend the lifespan of mineral reserves.
The known reserves of Bauxite (the ore from which aluminum is mined) are expected to last another two hundred years or so if we continue to mine it at current rates.
timber is expected to last at list 15-25 years.
The U.S. coal reserves are estimated to last over 250 years at current production levels. However, this estimate can vary based on factors such as changes in technology, energy demand, and environmental policies. It's important to consider that the focus on renewable energy sources may further impact the projected lifespan of coal reserves.
it will not degrade and will last for long
A few minutes
Scientists predict that it will last 155 years.
As far as I know, baguettes last as long as a diamond and "diamonds are forever".
Estimates vary but coal reserves are currently expected to last around 150 years at current consumption rates. However, increased demand or improved extraction technologies could affect this estimate.
Lignite reserves can vary by country, but on average they are expected to last for around 110 years globally. However, the actual duration of lignite reserves will depend on factors such as consumption rates, extraction techniques, and exploration of new deposits.