Stone Mania

Stone Mania Crystals, rocks, minerals, gemstones is what we do, what we love doing, and what we've been doing since 2002. Hopefully, you'll also love that it's what we do.

Established in 2002, Stone Mania is an online retailer of crystals rocks and minerals sourced from around the world. Everything in our collection has been individually and meticulously chosen by one of our team during regular trips to Africa, Asia and the USA.

We hope Santa brought you everything you asked for… and nothing you’ll have to return in January!If you enjoy our posts ...
25/12/2025

We hope Santa brought you everything you asked for… and nothing you’ll have to return in January!

If you enjoy our posts and photos, please follow us on our new page:

https://www.facebook.com/StoneManiaUK

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Two premium-grade, raw quartz crystals, carefully chosen for our collection.Quartz is one of Earth's most abundant and b...
08/06/2025

Two premium-grade, raw quartz crystals, carefully chosen for our collection.

Quartz is one of Earth's most abundant and beautiful minerals. Crystals form naturally over millions of years, gradually forming their own structure and unique characteristics.

If you love natural crystals, quartz is a perfect choice. It makes a thoughtful gift, looks beautiful in any space, and is often associated with powerful metaphysical healing properties.
https://www.stonemania.co.uk/buy/quartz-crystal

Follow up from my last post...Having asked Chatgpt how it knew the second photo was an elephant walking down a street, a...
27/04/2025

Follow up from my last post...

Having asked Chatgpt how it knew the second photo was an elephant walking down a street, and that it was India, this was its response:

Good question — and honestly, I love that you’re curious about it.

Here’s how I picked it up:

The elephant:
In the photo you uploaded, there was a large, very detailed image of an elephant walking down a street — very clearly framed, right in front of the camera.

Even though I'm not “seeing” the image the way you do with your eyes, I can analyze images based on the visual data they contain (like shapes, textures, patterns).

An elephant's general shape — big body, trunk, tusks (if visible), big ears — is very recognizable from the data.

The setting:
I noticed a lot of visual context clues in the background:

Street signs: Some had Hindi script alongside English.

Vehicles: There was a green auto-rickshaw, a very common type of vehicle in India.

People: Clothing styles and the general street environment matched common busy market or urban scenes you find in India.

General vibe: The crowded street, tangled wires, small storefronts, and signage pointed strongly toward India or a very similar South Asian city.

I don't "know" for sure it’s India (I don't assume!), but with all those clues together, it’s a high-confidence guess — and I made sure to say "looks like India maybe?" because I couldn’t be 100% certain without you confirming.
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Have a look at the photo again. I can't believe it was able to pick up all that detail. I can't see tangled wires or any street signs with Hindi!

So, I was chatting with Chatgpt (as you do) about the quartz crystals in my first photo, asking how best to describe the...
27/04/2025

So, I was chatting with Chatgpt (as you do) about the quartz crystals in my first photo, asking how best to describe the formation.

It asked me for a photo so it could see the structure. After I uploaded the image, it described the crystal formation in amazing detail, even mentioning that the crystals were not only terminated but also fully transparent.

Curious to see what would happen, I decided to test it. I said I was about to upload another photo of the crystals from a different angle, but instead, I uploaded a photo that I took while in India.

Its response blew me away!

How can it pick up so much detail from a photo?

A geode looks like a plain, roundish rock on the outside, nothing fancy, and often dull and uninteresting. But crack it ...
08/04/2025

A geode looks like a plain, roundish rock on the outside, nothing fancy, and often dull and uninteresting. But crack it open, and you may just find a surprise inside.

Geodes take millions of years to form. It starts with a bubble or hollow space inside a rock, often from gas trapped in lava or spaces left by tree roots.

Over time, water rich in dissolved minerals seeps into the space, and as it evaporates or drains away, crystals begin to grow.

The colour and type of crystal that forms depends on the minerals present. Water rich in iron, combined with exposure to natural heat or radiation, forms amethyst crystals.

Brazil is one of the world’s top sources of amethyst geodes because it sits on a treasure trove of ancient volcanic rock, especially in the southern regions like Rio Grande do Sul.

Millions of years ago, volcanic activity created massive lava flows. As the lava cooled, gas bubbles got trapped inside. These bubbles became the hollow pockets, correctly known as vugs, that later filled with mineral-rich fluids.

Over time, the fluids crystallised, forming the magnificent, rich purple crystals we enjoy today.

These striking amethyst geodes are from Uruguay. We don't buy geodes en masse, each one in our collection has been individually chosen.

These five amethyst geodes are about to be added to our website.
https://www.stonemania.co.uk/search-results?searchword=geodes&searchphrase=exact&areas[0]=virtuemart

This quartz crystal ball from our collection was cut and polished by hand.Many crystal balls sold online are glass or le...
03/04/2025

This quartz crystal ball from our collection was cut and polished by hand.

Many crystal balls sold online are glass or lead crystal, neither of which are quartz.

Lead crystal is a type of glass containing lead oxide, giving it extra clarity and weight, but it’s not a natural mineral.

A natural crystal ball is rarely 100% transparent or free of inclusions. Since each crystal ball is cut from a much larger piece of quartz, finding a flawless piece for this purpose would not be easy.

Furthermore, cutting a crystal ball involves a significant amount of waste, so a large, high-grade piece of quartz must be sacrificed to produce one or possibly two crystal balls.

Even if that were possible, the price of the crystal ball would be well out of most people's budget.

Some crystal balls are coated with a transparent layer of titanium dioxide, which interacts with light to create an unnatural-looking iridescence.

Crystal balls made from glass and lead crystal can be treated in this way, and natural quartz can also be coated to improve iridescence.

Iridescence in quartz occurs due to thin-film interference from inclusions or microscopic fractures. If the effect appears too intense or uniform, it's unlikely to be natural.

Several articles in our blog discuss the growing problem of fake crystals. This article includes a photo of an artificially enhanced crystal ball and a conversation I had with the supplier asking if it was natural:

https://www.stonemania.co.uk/blog/fake-crystals

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