Diamonds are 'colourful' because they reflect a rainbow of light through their facets.
'Expensive' diamonds are only available in about 20% of all diamonds mined, the remainder being industrial diamonds. Of that 20%, only a few stones are large enough, clear enough, colorful enough or flawless enough to be sold as 'expensive' diamonds.
Diamonds are so hard that they can only be cut by other diamonds. Diamonds are forever. (!) The bunt flew out of the diamond.
Diamonds are forever....indestructable, and so is love.
diamonds look colorful due to dispersion, which splits white light into its constituent colors. When light enters a diamond, it refracts and disperses, creating spectral colors. This dispersion is more noticeable in higher-quality diamonds with better cut and clarity.
Because they are so rare and because of the skill and labour so intense to produce gemstones from raw diamonds.
Why are baseball players so rich? They play on diamonds.
Black diamonds are more porous and from younger sedimentary rocks, so they are not as expensive as other diamonds.
Corals host symbionts with colorful photosynthetic pigments.
Black diamonds are usually used for jewelery when they are so identified. When not identified as such, they are probably used as industrial diamonds.
Diamonds are found on every continent except Antarctica and Europe - so yes, diamonds are found in India.
Yes, diamonds are harder than quartz on the Mohs scale, so diamonds can scratch quartz.
it is so rare that theres on a couple of canary diamonds in the world