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 :)

SOLD

-25%

Rhombohedral pyrite – Borieva Mine, Madan, Bulgaria - Thumbnail No. 196

Pyrite exhibiting a rare pseudo-rhombohedral habit, with strongly striated faces.
The crystal has a very vivid metallic luster and is in very good condition.

3.1 x 2 x 1.8 cm

Highlights of this specimen:

- Rare pseudo-rhombohedral habit
- Clearly visible growth striations
- Very pronounced metallic luster

For your information:

- The Borieva Mine is part of the Madan mining district, in the Rhodope Mountains, in southern Bulgaria. This Pb-Zn district is particularly renowned for its crystallizations of pyrite, sphalerite, galena, and other sulfides
- See the article: Moëlo, Y.: Pseudo-cubic trigonal pyrite from the Madan Pb–Zn ore field (Rhodope Massif, Bulgaria): morphology and twinning, Eur. J. Mineral., 35, 333–346