From the Australia economics Wikipedia page:
and
and
All of which could lead us to the conclusion that diamonds per se contribute, but not significantly, to Australia's economy.
You pay for diamonds everywhere based on each diamond's cut, colour, carat weight and clarity.
A carat of diamonds is worth whatever someone will pay you for the carat.
diamonds
By weight, diamonds are worth more because they are much more rare than gold.
Most of Australia's diamonds are exported to Belgium; specifically, to Antwerp, where diamonds are sold to manufacturers.
It's worth whatever someone will pay you for it.You can take it to a pawn shop, or a jeweler and ask. Man-made diamonds are less expensive than natural diamonds.
Your ring -- lacking any documentation as to its metal and details about the diamonds -- is worth whatever someone will pay you for it. A local jeweler can help you understand the facts about your bracelet, and you can pay a gemologist to evaluate the diamonds.
Australia produces brown diamonds from their mines.
Some chocolate diamonds are mined in Australia and comparatively, they cost less than clear diamonds. Diamonds are graded by what is commonly referred to as the three c's. Cut, Colour and Clarity. The better the cut, colour (rather clearer and not included) and clarity the more expensive the diamond will become.
Diamonds mined in Australia, in addition to white diamonds, also produce the brown colours and the pink colours. You can read more, below.
5 dollars
by weight diamonds
Anything is 'worth' whatever someone will pay you for it. Miracle Diamonds, as below, is apparently a wholesaler of merchandise that includes diamonds. You can review their materials to determine what you want to purchase, and how much you will pay.