Add products to the DISCOUNTED PRODUCTS section From Tuesday, October 28 at 2:30 p.m. to Monday, November 3, 2025 at 11:59 p.m., 30% off a selection of around 100 products 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 25 to 29! Orders placed up to and including June 18 can be shipped before we leave 👍

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 :)

SOLD

Quartz with pyrite inclusions - Minas Gerais, Brazil (?)

RARE quartz with superb, well-formed pyrite inclusions (recognizable dodecahedrons), brilliant and of good size (nearly 5 mm for the largest crystal!). These follow clearly visible planes, thanks to the superb transparency of the quartz.
Inclusions of this size are rare, all the more so in a well-formed quartz crystal (the rough being generally damaged, this type of inclusion is most often highlighted in cabochon-cut or faceted stones). Here, it is likely that the faces have been lightly polished to achieve greater transparency. However, the shape of the quartz remains 100% natural.
Unfortunately, we do not know the provenance of this piece, which came from a collection that included both exceptional classics and remarkable curiosities. Its origins could be Brazilian, Madagascan or even American (Green Ridge Breccia, Washington). We welcome any suggestions you may have.

9 x 8 x 6 cm