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 and calcite - Jan Coetzee mine, Northern Cape, South Africa

Entirely crystallized (floating) piece consisting of a flat quartz whose dark color seems to be given by the slightly green base (probably chlorites) and a level of red inclusions (hematite?). A few calcites are present on the back.

From an old collection, this quartz was extracted from the Jan Coetzee copper mine in South Africa, closed in 1971.

7.5 x 4.3 x 1.5 cm