RE: Diamonds31 Oct 2025 14:06
ASI is wrong!
Gem-quality rough diamonds in the 7-40 carat range are extremely rare, with the frequency of discovery decreasing significantly as the size increases within that range. They represent a minute fraction of the total volume of diamonds mined globally.
Here's a breakdown of their rarity:
Overall Scarcity: While over 100 million carats of rough diamonds are mined annually, only a small percentage (around 20-30%) is gem-quality, and the vast majority of these are under one carat.
Exponential Rarity: The rarity of diamonds increases exponentially with size.
7-carat diamonds: While rare, they are found more frequently than 40-carat stones. They are considered significant finds and often fetch high prices at specialist tenders.
40-carat diamonds: These are exceptional discoveries that garner significant attention and are typically among the largest and most valuable stones found globally in a given year. The difference in rarity between a 7-carat and a 40-carat stone is substantial, with the latter being orders of magnitude rarer.
Annual Volume: It is estimated that only a few thousand gem-quality diamonds over 10 carats are found annually across all global mines. The number of stones in the 20-40 carat range is much lower, likely only a few hundred or even fewer per year.
Market Impact: The scarcity of these stones means they are usually sold at special auctions or tenders and are primarily targeted by high-end luxury jewelers and investors.
In summary, diamonds in the 7-40 carat range are premium, rare items. A 7-carat stone is a rare find, while a 40-carat stone is an exceptional, world-class discovery.
Gem-quality rough diamonds in the 7-to-40 carat range are considered extremely rare, with the rarity increasing exponentially towards the higher end of that scale. While 7-carat rough stones are rare enough to be newsworthy finds, 40-carat gem-quality rough stones are exceptional discoveries that garner international attention.
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