because we like shiny things
One way is to hold back the inventory of diamonds, so that there are fewer available for sale, which elevates the price and value of the diamonds in the marketplace.
Imperial jade, also known as jadeite, is the rarest and most valuable form of jade. Its value can surpass that of diamonds due to its stunning green color and exceptional translucency. Imperial jade is highly prized in Asian cultures and is considered a symbol of status and luxury.
It is one more than 199 diamonds! The value will depend on their quality and size so, if that is what you want, I regret that there is no simple answer.
Mined diamonds are graded and sized, so that diamonds can be brokered within the industry according to their potential value. Seventy-five percent of mined diamonds are used by industry and the remainder used for gem-quality stones.
Diamonds are special because of their exceptional hardness, brilliance, and rarity. They are one of the hardest naturally occurring materials, making them highly durable and resistant to scratching. Their brilliant sparkle and fire are renowned for their beauty, making them a popular choice for jewelry. Additionally, their scarcity and long history as a symbol of love and commitment contribute to their enduring appeal.
People value diamonds based on their visually engaging beauty, their emotional baggage, and their investment value. Diamonds are rare and expensive, especially larger, high-quality stones, because they are expensive to discover, mine, cut, polish and market.
Blood diamonds are diamonds used to support wars, terrorism and mayhem against humans in the areas of the world that are in upheaval. People mine them -- usually at gunpoint or under threat of death or dismemberment -- because the terrorists' world buys the diamonds so the terrorists can buy more guns.
Diamonds being the hardest natural substance, can be used to carve, cut and polish anything, including another diamond. Their optical properties are also of value as high-quality, microscopic lenses that don't wear down. Incidentally, they also look very pretty when cut and polished correctly, so people like jewellery and ornamentation made of them.
Blood diamonds fund wars, civil unrest, terrorism and other acts of violence and crime against humans. So long as there are humans, these conflicts will continue.
It is highly likely that humans originated in Africa, and so yes, the first humans would have been black.
Every diamond should come with a certificate. If it doesn't it should be engraved on the diamonds themselves so other jewelers can tell.
Gem-quality diamonds -- for their relative size and value: small and high -- are easy to conceal and carry from place to place, especially across borders, so as to elude customs and declarations.