SPECIAL OFFER From Saturday 20 June to Tuesday 30 June, 20% off a wide selection of minerals in the ‘Discounted products’ section 🤩

PROMO CODE -10% : "PATIENCE" We will be away from home from June 19th to July 3rd included. Meet us at the swimming-pool, booth ZM-PI-15 :) ⚠️ Any orders placed on the site during this period will be processed when we will be back. 🙏 We are therefore offering you a 10% discount on ALL THE WEBSITE (including promotional products), with the code 👉 PATIENCE 👈 to be entered when finalising your order :)

PROMO FLASH : -15% OFF ON THE WHOLE SITE 24-hour FLASH SALE: 15% off EVERYTHING ON THE SITE, no code needed, the discount is automatic! 👉 Promotion valid from January 3, 2026, at 8:00 p.m. (French time) to Monday, January 5, 2026, at 10:00 p.m. (French time). ⚠️ It is not possible to earn loyalty points during this promotion period.

LAST DAYS TO ORDER Join us at the Sainte-Marie-aux-Mines mineral & gem show, booth ZM-PI-15 from June 24 to 28! Orders placed up to and including June 15 can be shipped before we leave 👍 The website will, of course, remain open while we are away; orders will be processed upon our return in early July.

FLASH PROMO off the entire site*

* Excluding new products and already discounted products

Valid from Tuesday 07/10/2025 - 08 am (French time) to Sunday 12/10/2025 - 11h59 pm (French time), for immediate orders (no reservations).
Cannot be combined with the loyalty program.

Hurry, only :

Day

Hours

Minutes

left until the end of the promotion :)

FLASH PROMO off the entire site*

* Excluding materials and hewels categories

Valid from saturday 10th october 2025 - 09 am (French time) to Sunday 11the october 2025 - 11h59 pm (French time), for immediate orders (no reservations).
Cannot be combined with the loyalty program.

Hurry, only :

Day

Hours

Minutes

left until the end of the promotion :)

Reduced price
25%

Reduced price
-25%

RED SPINEL – DUO natural crystal and cut gemstone

€30.00

€22.50Save 25%

Tax included

This red spinel duo allows you to discover two different expressions of this mineral: a small natural crystal and a round brilliant-cut gemstone.

The natural crystal measures approximately 0.6 mm and displays a natural crystallization. Its provenance is unknown.

Alongside it is a 0.4 mm red spinel from Burma (Myanmar), cut in a round brilliant style. Its facets allow the colour and optical qualities of this gemstone to be appreciated.

Together, these two specimens provide a direct comparison of spinel in its natural crystallized form and faceted form.

Crystallized spinel: 0.6 mm – provenance unknown
Round brilliant-cut spinel: 0.4 mm – Burma (Myanmar)

Highlights of this pair:

- Natural spinel crystal measuring 0.6 mm
- Red spinel gemstone, 0.4 mm round brilliant cut
- Two complementary expressions of spinel

For information :

- Spinel is a magnesium aluminium oxide with the chemical formula MgAl₂O₄. It occurs in a variety of colours, with red being one of the most sought-after in gemmology. Its red colour can be related to the presence of chromium.

About authenticity:

Although we are not gemologists, we place great importance on the authenticity of our cut stones. This gem was purchased from certified gemologists to ensure that it is a natural stone.