What is Tanzanite?

What is tanzanite? In short: Tanzanite is a blue-violet gemstone that occurs in only one mine in the world, at the foot of Mount Kilimanjaro in Tanzania. It is rarer than diamond and will become even rarer as the mine is depleted. When the mine is exhausted, it will no longer exist.

As of September 2026. By Phil, Corelune Jewellery, Düsseldorf.

What makes tanzanite so valuable?

• Only one mine worldwide, geologically unique
• Intense blue-violet with pleochroism (color change depending on the viewing angle)
• Prices have been rising for years, limited availability

Buy tanzanite

• Always buy with a GRS certificate
• AAA quality: the most intense blue-violet, largely inclusion-free
• Country of origin: Tanzania/Mererani

If you are looking for something suitable: Corelune offers stainless steel jewelry with 14-karat gold plating or in a silver look, waterproof and nickel-free.

To match: Buy tanzanite jewelry: The rare stone from only one mine in the world.

What is ordered most frequently

Which material holds up best in everyday use?

What should you look for when buying jewelry?

The material question comes first and determines almost everything else. Stainless steel retains its color and shape for years, handles water well, and is affordable for everyday use. The trade-off is that there is no material value behind it.

Sterling silver looks valuable but requires care because it tarnishes. Gold-plated brass has the warmest initial tone, but the plating wears off first where there is friction: the inside of rings and clasps.

What a piece can withstand is shown by its workmanship. Three points are enough for an assessment: solder joints, clasp mechanism, loops.

Fashion jewelry honestly categorized: made to be worn, not as an investment. For substance over decades, you need solid gold and a different budget. For a piece that withstands water and everyday use, this category is suitable.

What is part of the routine for jewelry pieces?

With jewelry pieces, care is worth it above all in the places you cannot see. Store it dry, dark, and separate from each other, and never permanently in the bathroom. What cannot be undone is usually abrasion and not dirt.

How can you tell if jewelry pieces will last a long time?

Between two visually identical pieces, the difference is almost always in the workmanship, not the material. A matte or uneven surface in individual places indicates uneven post-processing. If one of these points fails, the rest is secondary because the piece will break exactly there first.

What price is realistic for jewelry pieces?

The question is not so much what a piece costs, but how often you will wear it. In the range up to twenty euros, simple individual pieces are common; above that, the workmanship becomes finer and the selection larger. Money is invested sensibly where you put on the piece without thinking.

When does wearing damage jewelry pieces?

The question is rarely whether the material can withstand water, but whether tension and friction are involved. For glued stones, hot water and ultrasound are the two real risks. If you rarely take the piece off anyway, you should at least make an exception before going to sleep.

Which combinations work with jewelry pieces?

If you feel unsure, start with two pieces in the same color and add more later. Two pieces need a clear difference in size or length, otherwise they will compete with each other. If you stick to a color family, you can expand at any time later.

What mistakes happen when buying jewelry pieces?

With jewelry pieces, a wrong choice rarely costs a lot of money, but it repeats itself if the cause remains unclear. Often your own existing jewelry is ignored, so the new piece does not match anything you already have. If you orient yourself around what you already wear, you are significantly more likely to be right.

How do you avoid size mistakes with jewelry pieces

Measuring takes less than a minute and saves you the exchange. Write down the result, because on the next purchase you will save yourself the whole process. Everything else is taste and can be corrected without problems.

What happens to jewelry pieces after years

Over the years, less changes than many expect, and other things faster than assumed. Plated parts show wear first on edges, clasps, and inside surfaces, usually after one to three years of daily wear. If you know this, you will make the material decision more appropriately from the start.

Material, dimensions, and prices at a glance

Showering, swimming, and sports do not affect stainless steel; it does not tarnish. See the values from the Corelune range for reference.

Frequently asked questions

What care does stainless steel jewelry really need?

Lukewarm soapy water and a soft cloth are the safe method.

Does stainless steel tarnish like silver?

Compared to silver and gold-plated brass, stainless steel remains color-stable. Colored coatings still wear off over the years at friction points.

Is fashion jewelry suitable as an investment?

No. That is the honest answer: The value lies in wearing it, not in the metal. Investment only works with solid gold.

Examples that apply: Geometric-shaped bracelet made of stainless steel and Ring made of stainless steel, 2.0 g. You can find more bestsellers in the category our bestsellers.

Is the bathroom suitable for storing jewelry?

Dark, dry, separate from each other. Damp rooms like the bathroom accelerate the process.

How can I tell if jewelry will last a long time?

Check the solder joints, the loops, and the clasp. If all three are clean, the workmanship is usually correct.

About the author

Phil runs Corelune Jewellery in Düsseldorf and has been working daily with stainless steel jewelry since 2024: sample inspection, complaints, wear tests in everyday life. The information in this article comes from the own range and from what customers report. Where Corelune does not offer something, this is also stated here.

Which categories fit this topic?

Specifically, it looks like this:

• Tarnish-free jewelry

Price-wise: 20% discount from two pieces, tiered up to 35% with five. From 59 euros, we ship free. Two pieces in the same metal color can be freely combined.

View tarnish-free jewelry at Corelune

At Corelune: Free shipping from €59, 14-day returns, shipping from the Netherlands.

→ View waterproof jewelry at Corelune