Diamonds are not found in a great many different places. Diamonds are not found floating in the ocean for example.
Yes, diamonds can be found underground. In fact, most diamonds are mined from the earth.
Diamonds are commonly found in volcanic pipes.
No, no natural diamonds are found in New Zealand.
Diamonds are continuously being found around the world, so there is no specific "last time" that they were found. The mining of diamonds happens on an ongoing basis in various countries where they are naturally occurring.
Ancient Egyptians may not have 'cut' their diamonds in the same way that diamonds are 'cut' today. The natural occurrence of a diamond can be a pyramid shape, and even two pyramids fused together at the base. In this incarnation, a diamond is quite beautiful and eye-catching.
Probably, although not diamonds as we know them today. Today's popularity and valuation of diamonds begin in earnest the 19th century with improvements in the art of planning and cutting raw diamonds into today's gemstones. You can read more about Egyptians' adornment, below. You can also read more about the history of today's gemstones, below.
Diamonds are found below level 16 of the world.
The highest quality diamonds are found in the earth.
The diamonds themselves are, well, diamonds. They're found mixed in with other rock, though.
Diamonds are found in diamond mines that circulate around volcanic pipes: mined diamonds.As well, diamonds are found under water where the water has washed over volcanic pipes that contain diamonds: alluvial diamonds.
Diamonds are found on every continent except Antarctica and Europe - so yes, diamonds are found in India.