Corlia Roberts Institute Of Diamonds

28/05/2026

POV: I am a fancy coloured diamond and I watched a colourless diamond sell for more money than me once and I have never fully recovered.

I am RARE. Do you understand how rare? Less than 1 in 10,000 diamonds have enough colour to be classified as fancy. I went through everything a colourless diamond went through PLUS additional geological conditions to get this colour.

Pink? That's structural distortion during formation. Yellow? Nitrogen. Blue? Boron — which has no business being in a diamond but here we are. Red? Scientists are still not entirely sure and honestly I think that's kind of iconic. 😌

The Oppenheimer Blue sold for over $57 million. The Pink Star went for $71 million. The Red diamonds? There are fewer than 30 known to exist in the entire world.

But yes. Tell me again how colourless is the standard. 👀

Fancy coloured diamonds are nature's rarest flex. 💎 Learn what causes colour, how to grade it, and why it matters — our courses cover it all. 📲 WhatsApp us 079 969 9580

27/05/2026

Your natural diamond said what it said 💎

I didn't ask to be born 150km underground in literally the most extreme conditions on earth. The pressure? Unhinged. The heat? Absolutely unhinged. And yet here I am — stunning.

A volcano basically kidnapped me and shot me to the surface at supersonic speed. Most things don't survive that. I did. Because I'm built different.

Miners dug me up. Looked at me like I was just a rock. Honey. I am not just a rock. I am ancient. I am rare. I am the result of conditions that will never be perfectly replicated.

Yes I have inclusions. Those are called character. Yes I might have a crystal or two inside me. That's called history.

I didn't come from a lab. I came from the earth itself — and the earth does not miss. 🌍

Learn to read the story behind every stone 079 969 9580

24/05/2026

There is a version of the diamond world that the public never sees—a world of rough stones, deep technical science, and the kind of expertise that acts as a universal passport.

​The Untold Diamonds Online Course is a masterclass in the technical and scientific evaluation of rough diamonds, now accessible to a international audience. 🌍

​✨ International enrollment is currently open 079 969 9580

15/05/2026

Most gemstones are born in the Earth’s mantle, but Moissanite? It came from the stars. First identified in 1893 by Dr. Henri Moissan within a meteorite crater, natural Moissanite is so rare it’s practically non-existent on Earth.
​Today, we use high-pressure, high-heat science to replicate that celestial event. It’s not a 'diamond alternative'—it’s a piece of cosmic history brought to life in the lab. Truly a gem for those who look up. 💫 🌌

15/05/2026

Some people wait for opportunity.
Others learn enough to recognize it when it appears.
The diamond industry was never built for spectators.

It rewards the curious.
The bold.
The ones willing to study what others overlook.

Every expert once started with a single question.
Every dealer once held their first rough stone.
Every journey begins before you feel “ready.”

Your future can change with one skill, one decision, one season of discipline.

Start where you are.
Learn what others don’t.
Build something rare.

Rough Diamonds • Education • Gold and Precious Metals

📍 Margate South Africa | Est. 1998

Let's Chat 079 969 9580

10/05/2026

A mother’s love is one of life’s rarest treasures.

Strong, beautiful, and timeless, just like a diamond. 💎

Today, everyone at CXD – Corlia Roberts Diamond Education⁠ would like to wish all mothers a truly beautiful Mother’s Day 2026

06/05/2026

06/05/2026

The "Skin" of a Diamond (Understanding Rough Surface)

Did you know that evaluating a rough diamond is vastly different from grading a polished one? When we look at a rough stone, we aren't just looking for sparkle—we are looking for:

​1️⃣ Crystal Shape: Is it an octahedron (ideal) or a macle (flat)? This determines the "yield."
2️⃣ Surface Markings: Trigons (tiny triangles) on the surface can help us identify a genuine diamond from a simulant.
3️⃣ Internal Tension: If the stone has too much "strain," it could shatter on the cutting wheel.

​Mastering the rough is the ultimate skill in the diamond trade. It’s about seeing the potential before anyone else does.

​Interested in learning how to evaluate stones like a pro? Check out our latest courses! 🔗 https://diamondeducation.co.za/rough-diamond-evaluation/

01/05/2026

Happy Workers' Day! 💎
​Today we’re taking a moment to honor the incredible dedication within the diamond and jewelry industry. It takes more than just a keen eye it takes years of study, technical precision, and a passion for the craft to bring a piece of jewellery to life.
​We are proud to be part of an industry built on such rich heritage and hard work. Wishing all our colleagues, students, and friends a restful and happy 1st of May!

28/04/2026

Want to work with GOLD legally?

If you want to start a jewellery or gold business in South Africa…
you cannot operate without the right licence.

Here’s what you need:
PMJ Permit or Refinery Licence → to legally work with gold

Chat with us on 079 969 9580

22/04/2026

🌍 Earth Day Reminder: Every Diamond Has a Beginning Beneath Our Feet

Before a diamond becomes brilliance…
Before gold becomes a masterpiece…
It all starts deep within the Earth.

Formed over billions of years under intense pressure and heat, these natural treasures are a reminder of the power, patience, and beauty of our planet.

At CXD International, we don’t just teach diamonds —
We teach respect for their journey.

💎 Know your stone.
🌱 Respect its origin.
🌍 Protect the Earth that made it possible.

✨ Ready to turn natural resources into real opportunity?
Chat with me on WhatsApp and let’s find the right course for your goals.