O.K., very good packed and sample is according to photo in auction.
查看翻译含有蠕虫状内含物的钙铁榴石 - Diakon,卡伊,马里 - 高度: 3.8 cm - 宽度: 3.6 cm- 46 g
编号 89777555
Watch a video of this specimen by following the Vimeo link below:
https://vimeo.com/930295998
I recently got acquainted with what is probably the most comprehensive collection of Kayes region skarn minerals, patiently gathered by a knowledgeable geologist and collector over more than 10 years directly on the field in this remote region of Mali: what a blast I had!
The variety and quality of the Kayes minerals is much wider than I expected, with individual discoveries actually meeting the highest standards for garnet, vesuvianite or prehnite.
In particular, the colour palette and facies diversity for andradite garnet simply ranks the Kayes skarns among the very best localities for the species on Earth.
It is however quite hard and time-consuming to find quality specimens: after reaching Kayes from wherever you would stay, it does take a half day 4x4 truck ride on trails to make it to the villages where local miners and farmers live. Then several days on-site are needed, time for the field collectors from all neighbouring settlements to converge. Unfortunately, the skarn deposits artisanally mined there are thankless: most crystals are strongly oxidized or extracted in a poor condition due to the lack of free space for crystal growth and the mining methods used. Colorful, lustrous crystals are rare and fine garnets are often broken to reveal any gem core that could be valuable for the cut stone market.
Actually, most of the time, a buyer would probably leave without any good rock. Then, repeat this procedure several times a year over a large number of years and you could possibly end up with fine Kayes mineral specimens!
This is why I am thrilled to share with you the result of a careful and short selection among hundreds of collection pieces from Kayes I was lucky to search through.
Here is an absolutely unique garnet crystal (3.5 cm large) featuring never-seen-before convolute worm-shaped inclusions, that make for a stunning visual effect since it contrasts fundamentally with the sharp dodecahedral crystal shape!
After close-up examination under strong magnification, I assume these 'worms' to be reaction halos with a green Cr-rich pyroxene (?) and transparent white stilbite (or another species?). The reaction leading to the formation of such halos is unknown to me and further analysis should be performed on the sample to know more about it.
You have here something truly unique from Kayes, I have not seen any other specimen like this one. The crystal is complete, lustrous, of good clarity and colour. The occurrence of the 'worms' is striking since it smashes the crystal geometry. Everything is complete and recrystallized, you can also notice some white-bluish chalcedony (or opal) crusts on some faces.
An unique, special andradite crystal from Kayes!
卖家故事
Watch a video of this specimen by following the Vimeo link below:
https://vimeo.com/930295998
I recently got acquainted with what is probably the most comprehensive collection of Kayes region skarn minerals, patiently gathered by a knowledgeable geologist and collector over more than 10 years directly on the field in this remote region of Mali: what a blast I had!
The variety and quality of the Kayes minerals is much wider than I expected, with individual discoveries actually meeting the highest standards for garnet, vesuvianite or prehnite.
In particular, the colour palette and facies diversity for andradite garnet simply ranks the Kayes skarns among the very best localities for the species on Earth.
It is however quite hard and time-consuming to find quality specimens: after reaching Kayes from wherever you would stay, it does take a half day 4x4 truck ride on trails to make it to the villages where local miners and farmers live. Then several days on-site are needed, time for the field collectors from all neighbouring settlements to converge. Unfortunately, the skarn deposits artisanally mined there are thankless: most crystals are strongly oxidized or extracted in a poor condition due to the lack of free space for crystal growth and the mining methods used. Colorful, lustrous crystals are rare and fine garnets are often broken to reveal any gem core that could be valuable for the cut stone market.
Actually, most of the time, a buyer would probably leave without any good rock. Then, repeat this procedure several times a year over a large number of years and you could possibly end up with fine Kayes mineral specimens!
This is why I am thrilled to share with you the result of a careful and short selection among hundreds of collection pieces from Kayes I was lucky to search through.
Here is an absolutely unique garnet crystal (3.5 cm large) featuring never-seen-before convolute worm-shaped inclusions, that make for a stunning visual effect since it contrasts fundamentally with the sharp dodecahedral crystal shape!
After close-up examination under strong magnification, I assume these 'worms' to be reaction halos with a green Cr-rich pyroxene (?) and transparent white stilbite (or another species?). The reaction leading to the formation of such halos is unknown to me and further analysis should be performed on the sample to know more about it.
You have here something truly unique from Kayes, I have not seen any other specimen like this one. The crystal is complete, lustrous, of good clarity and colour. The occurrence of the 'worms' is striking since it smashes the crystal geometry. Everything is complete and recrystallized, you can also notice some white-bluish chalcedony (or opal) crusts on some faces.
An unique, special andradite crystal from Kayes!
卖家故事
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Exactly as photographed, safe and very fast shipment
查看翻译Very quick shipment. Very well descibed and carefully packed. Knowledgeable and reliable seller.
查看翻译Excellently desribed, very well packed. Very qiuckly shipped (auction at 13th octobre, received 16th octobre). Reliable seller; would buy again without hesitation
查看翻译Cristosud is top ! Perfect delivery, very beautiful mineral. Thanx a lot !!
查看翻译Très belle pièce conforme à la photo et à la description. Emballage parfait pour un transport sans mauvaise surprise à l 'arrivée !
查看翻译As usual, Christosud had accurately photographed and described the item. Shipment was quickly delivered and very, very carefully packed. My compliments! Will buy again without hesitation.
查看翻译Excellent old find specimen of nickelskutterudite. Very well packed. Thank you.
查看翻译Thank you again for such a good service. I have used this seller a few times now and I have never been disappointed.
查看翻译Envoi soigné, très belle pièce.
查看翻译Vendeur serviable et professionnel. Échantillon très intéressant et bien décrit. Emballage très soigné.
查看翻译Plus que parfait. Merci ++++
查看翻译PERFECTO ESPECIMEN
查看翻译fast shipping, good packaging, specimen looks like the photos
查看翻译Bien emballé- Expédition rapide
查看翻译Comme d'habitude avec ce remarquable vendeur : joli minéral parfaitement conditionné
查看翻译Conforme, protégé, merci
查看翻译perfect!
查看翻译Toujours aussi parfait. Superbes minéraux, envoi rapide et emballage de qualité. Merci Lucas !
查看翻译Very happy!
查看翻译Exceptional mineral. Very good packaging. Total professionalism.
查看翻译Conforme à la description. Envoi rapide. C'est parfait.
查看翻译Tutto bene. Grazie mille
查看翻译Excellent seller. Communicative, knowledgeable. Some real good specimens too.
查看翻译Beautyfull big stone, well packed.
查看翻译