For a long time, the gem world was split into two categories: precious and semi-precious.
Diamonds, rubies, sapphires, and emeralds were considered “precious.” Almost everything else fell into the semi-precious category.
Simple enough — except it’s not actually that simple.
Today, many jewellers and gemologists consider these terms outdated because they don’t accurately reflect a gemstone’s rarity, beauty, or value. In fact, some stones traditionally labelled “semi-precious” can be far rarer and more expensive than stones in the precious category.
So where did the distinction come from?
Historically, the four “precious” gemstones earned their reputation because they were rare, durable, and highly desired in ancient trade and royal jewellery collections. They became status symbols, and over time, the label stuck.
Everything else — from amethyst to tourmaline to aquamarine — was grouped into the semi-precious category, regardless of quality or rarity.
But modern gemstone sourcing and gemology have complicated that system quite a bit.
Take alexandrite, for example. It’s traditionally considered semi-precious, yet fine alexandrite can be significantly rarer and more valuable than many sapphires or diamonds. Spinel is another good example. For years it lived in the shadow of ruby and sapphire, but high-quality spinel is now hugely sought after by collectors and designers alike.
Even stones like opal, watermelon tourmaline, and natural zircon have seen major appreciation as people move toward more distinctive, less traditional jewellery choices.
The truth is, a gemstone’s value has much more to do with:
- Rarity
- Colour
- Clarity
- Cut
- Origin
- Demand
- Durability
…than whether someone once categorized it as “precious” or “semi-precious.”
There’s also a cultural shift happening in jewellery right now. More people are choosing gemstones based on personality and aesthetics rather than traditional hierarchy. Clients are increasingly drawn to stones with unusual colours, inclusions, and character — things that would have been overlooked decades ago.
Moss agate, salt-and-pepper diamonds, teal sapphires, opals, and bi-colour tourmalines are all examples of stones that have grown in popularity because people want jewellery that feels individual rather than conventional.
That shift has made the “semi-precious” label feel even less relevant.
At the end of the day, a gemstone doesn’t become meaningful because of a category. It becomes meaningful because of the way it looks, the way it wears, and the connection someone has to it.
And honestly? Some of the most interesting stones in the jewellery world have never been considered “precious” at all.
