Gemstone Detective

12/06/2026

This is why I love being on the ground in Tanzania. 🇹🇿

The first clip shows a rough garnet I purchased from a trader in Morogoro.

At that stage, all the potential is hidden inside the stone. You can make educated predictions, but until it is cut, you never know exactly what nature has created.

I entrusted the rough to Noreen, whose cutting revealed something rather special.

The finished gemstone displays beautiful flashes of blue and a brilliance that simply wasn’t visible in the rough crystal.

Moments like this are one of the great joys of gemstone sourcing. Watching a gemstone’s hidden beauty emerge is a reminder that every stone has a story.

Sometimes a gemstone is just too beautiful to let go.

But if you’re looking for a remarkable gemstone for a bespoke jewellery project or to add to your collection, I’d be delighted to help find one for you.

That’s the advantage of being here in Tanzania: access to gemstones at source, the ability to assess them in person, and the opportunity to uncover gems that most people will never see.

📩 Send me a message if you’re searching for something special.

ColouredGemstones FineJewellery BespokeJewellery GemCollector Gemmology

12/06/2026

The right preparation makes sourcing feel calm, not chaotic. That shift is often the difference between a good trip and an expensive lesson.

12/06/2026

💙 Thinking about buying a tanzanite?

Today I visited the Tanzanite Experience in Arusha.

Many visitors come to Tanzania for a safari and leave thinking about tanzanite. 💎

It’s easy to see why. Found in just one location on Earth, tanzanite has become one of Tanzania’s most sought-after treasures.

If you’re considering buying a tanzanite during your visit, the Tanzanite Experience offers a good introduction to the gemstone’s story, from its discovery through to the finished jewellery you see in the shops.

But understanding the story of tanzanite and choosing the right tanzanite are two very different things.

What many buyers don’t realise is that colour, clarity, cut, rarity and value can vary enormously from one stone to the next. Two tanzanites may appear similar at first glance, yet one could be significantly rarer or better suited to your goals and budget.

For example, most people know about blue and violet tanzanite, but far fewer are aware of some of the rarer colour variations and characteristics that can have a significant impact on desirability and value.

This is where expert guidance can make all the difference.

As a qualified gemmologist, I help clients look beyond the sales display and understand what they are actually buying. Whether you’re searching for a tanzanite, sapphire, ruby, emerald or another significant gemstone, I provide independent sourcing support to help you identify quality, compare options and make informed decisions.

The best gemstone isn’t necessarily the most expensive one.

It’s the one that’s right for you.🤗

📩 If you’re considering a gemstone purchase during your visit to Tanzania, send me a message.

11/06/2026

A simple guide to understanding coloured gemstone prices, the common mistakes buyers make and the illusions that can make a stone seem more or less valuable than it really is.

https://www.gemstonedetective.com/post/coloured-gemstone-pricing-illusions

That final point matters more than most outsiders realise. Because in coloured gemstones, trust still drives enormous parts of the trade.

11/06/2026

Most people think finding a gemstone is the hard part.

It isn’t.

Finding the right gemstone is.

I’m currently in Arusha, Tanzania, one of Africa’s most important gemstone trading hubs.

Every day, gemstones from mines across the region pass through here before eventually finding their way into jewellery shops around the world.

What’s fascinating is that when you’re this close to the source, you learn things that rarely appear on a certificate:

🔹 Why one sapphire costs twice as much as another.

🔹 Why two gemstones with identical lab reports can look completely different.

🔹 Which stones are genuinely exceptional.

For anyone buying an engagement ring gemstone, commissioning bespoke jewellery, or searching for a specific stone, these details matter.

Because you’re not just buying a gemstone.

You’re choosing something that may become part of your family’s story for generations.

That’s why I spend time in places like this.

Not to find a gemstone.

To find the right one.

Would you rather choose a gemstone from a photograph, or from someone who has seen hundreds in person?

10/06/2026

A conversation at a mine in Kenya changed how I think about pricing structures entirely. Value looks different at source.

09/06/2026

Before stepping into a market at the source, understand how the system works.
Structure protects you more than enthusiasm.

https://www.gemstonedetective.com/buying-gemstones-safely-at-source

08/06/2026

A clear, simple guide to gem identification for collectors, including what they tell you, what they do not tell you and why a certificate isn't the whole story.
https://www.gemstonedetective.com/post/gem-certification-guide-for-collectors

A gemstone certificate, or more accurately called a lab report, is an independent evaluation from a recognised gemmological laboratory. These reports describe a stone’s key characteristics: species/variety, carat weight, colour, clarity, measurements, and treatment disclosures.

05/06/2026

The goal is not just to buy a beautiful gemstone.

The goal is to buy one with clarity and confidence.

04/06/2026

A collector-focused guide to buying a Ceylon sapphire in Sri Lanka, including what influences value, what to question before purchase and why informed guidance matters.

https://www.gemstonedetective.com/post/buy-ceylon-sapphire-in-sri-lanka

This guide is designed to give you clarity, insider insight, and practical strategies for buying cut and polished Ceylon sapphires.