Objects are valued at what someone is willing to pay for it.
Abundant commodities are valued at the average price a person in the group is willing to pay. This "gemstone" is actually beryl, a very common crystal. What they're trying to do is take this commodity mineral and price it like a scarce object. Paintings so scarce as the Mona Lisa with an available quantity of one are priced at auction to the maximum any person on planet Earth will pay. They actually don't even know how to price it they had to invent a competition to discover the number from the greatest fool in the room. If there were two or eight original copies, the value would nosedive. The scarcity provides the value, not the art.
Since 2010 some shrewd businessmen have decided that pink beryl is a coveted gemstone and marketed it like diamonds. But it's totally worthless, as are diamonds. Similarly cut glass looks the same.
How evil is it to target couples who want to get married and start a family, to then start a marketing campaign and invent a tradition to force them to buy a worthless rock for three months of the groom's salary? I wonder how many expecting working class families had less food on the table because of that.
You've got to be very careful about this kind of thing. Stamp it out. Deviating from utilitarian logic gets perilous right fast. Your unborn children will literally starve
GE made the first gem quality diamonds in the 1970s. They can be manufactured in commercial quantities since the 2010s. The largest one so far is 511 karats.
So the diamond industry has to market them as inferior, labeling them "lab grown" and suggests they won't retain their value.