Diamonds are mined in NWT. Opals and nephrite jade come from BC. There are numerous other semiprecious materials mined but most are from smaller localized operations. See the related link (below) for detail.
There are many types of minerals which are mined in Canada. Four of them are iron, salt, gold, and sulphur.
You may be thinking of gemstones and industrial diamonds. Gemstones represent about 20% of all diamonds mined, and the remainder is industrial diamonds.
Minerals and gemstones mined in Australia include: Bauxite Coal Diamonds Salt Uranium Opals Sapphires
shown some rubies and emeralds and even King Solomon's stone ....
Ruby is mined in Taita Taveta, Kwale, Kitui, West Pokot, and Baringo districts Tsavorite is mined in Taita Taveta, Kwale Districts Sapphire is mined in Kitui, Mwingi and Isiolo Districts Tourmaline is mined in Taita Taveta, Kajiado, Kwale, and Kitui Districts Aquamarine is mined in Meru and Tharaka Districts
Diamonds, gold, kaolin, gypsum, tin, and various gemstones, including Tanzania, are mined in Tanzania.
Nope ^-^
Chocolate
Mined diamonds are more valuable than manufactured diamonds, as gemstones. This may not be a consideration for you, in which case, you would own a manufactured diamond.
Diamond is the hardest mineral known. About 75% of diamonds mined are used by industry and only 25% qualify as gemstones. Gemstones are measured according to their clarity, colour, cut and carat weight.
One hundred percent of all diamonds mined are 'used', either as gemstones -- about 20%, or as industrial diamonds.
Canada's economy largely depends on its mineral exports. Some minerals that are mined in Canada are: coal, copper, gold, iron ore and potash.