Dioptase with Mimetite

Ntola Mine, Mindouli, Mindouli District, Pool Department, Republic of the Congo
Small Cabinet, 5.9 x 4.3 x 1.8 cm
Start Time: 05/25/2023 7:30:00 pm (CDT)
End Time: 06/01/2023 6:50:00 pm (CDT)
Auction Closed
Winning Bid: $450

Item Description

It should be noted that these specimens were originally reported as coming from the Mpita Mine, but they are in fact from Ntola. This piece is from a discovery in January of 2019. Although Dioptase is largely beloved by dealers and collectors, the one problem with the species is that there aren't too many world localities that produce excellent specimens. These new piece are honestly a bit different from most of the pieces that we've handled from this locality in the past from Republic of the Congo. Instead of large individual crystals, you can see smaller beautiful clusters of Dioptase on matrix. The color of the crystals shows that classic emerald green hue, and they are highly lustrous and gemmy showing textbook prismatic trigonal form, but what really sets them off is the many small brilliant orange-yellow crystals of Mimetite (confirmed by analysis) underneath. We took some micro photos with a Canon MP-E 65 mm macro lens to better illustrate the quality of the little Mimetite and you can see that they are actually pyramidal in habit, which is not common in our experience. The contrast between the Dioptase and the Mimetites is wonderful. PLEASE NOTE: We've listed some of these pieces i the past as Dioptase with WULFENITE, which was also confirmed by analysis, and it appears that both species are present at this locality. The piece is in very good shape and it's a lot fun to view under the microscope. We all know that the prices for Tsumeb Dioptase specimens are on the rise, but you can pick up this attractive "Tsumeb-esque" specimen for a great price, with an association that is rarely seen around the world.

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Bidding History

Bid Amount Bid Time
$450 06/01/2023 6:43:37 pm (CDT)
$440 06/01/2023 6:43:37 pm (CDT)
$430 06/01/2023 6:43:20 pm (CDT)
$420 06/01/2023 6:43:20 pm (CDT)
$410 06/01/2023 6:43:04 pm (CDT)
$400 06/01/2023 6:43:04 pm (CDT)
$390 05/30/2023 7:09:37 pm (CDT)
$380 05/30/2023 7:09:36 pm (CDT)
$370 05/30/2023 5:50:20 pm (CDT)
$360 05/30/2023 6:05:11 am (CDT)
$350 05/29/2023 11:36:29 pm (CDT)
$345 05/29/2023 11:36:29 pm (CDT)
$330 05/29/2023 11:36:14 pm (CDT)
$320 05/29/2023 11:36:14 pm (CDT)
$310 05/29/2023 11:35:48 pm (CDT)
$300 05/29/2023 11:35:48 pm (CDT)
$265 05/29/2023 11:35:32 pm (CDT)
$255 05/29/2023 11:35:31 pm (CDT)
$245 05/29/2023 7:39:03 pm (CDT)
$235 05/29/2023 5:56:18 pm (CDT)
$225 05/28/2023 11:38:46 am (CDT)
$222 05/28/2023 11:38:46 am (CDT)
$215 05/28/2023 11:38:42 am (CDT)
$205 05/28/2023 11:38:42 am (CDT)
$195 05/28/2023 11:38:37 am (CDT)
$185 05/28/2023 11:38:36 am (CDT)
$175 05/28/2023 12:23:19 am (CDT)
$165 05/26/2023 12:17:06 pm (CDT)
$155 * 05/26/2023 12:17:02 pm (CDT)
$155 * 05/26/2023 12:17:02 pm (CDT)
$145 05/26/2023 11:55:51 am (CDT)
$135 05/26/2023 11:55:25 am (CDT)
$125 05/26/2023 11:55:25 am (CDT)
$115 05/26/2023 11:55:13 am (CDT)
$105 05/26/2023 11:55:13 am (CDT)
$95 05/26/2023 11:54:58 am (CDT)
$85 05/26/2023 11:54:58 am (CDT)
$65 05/26/2023 11:35:55 am (CDT)
$55 05/26/2023 11:35:55 am (CDT)
$40 05/26/2023 10:36:43 am (CDT)
$35 05/26/2023 10:36:43 am (CDT)
$30 05/26/2023 10:36:32 am (CDT)
$25 05/26/2023 10:36:32 am (CDT)
$15 05/26/2023 12:15:30 am (CDT)
$10 05/25/2023 8:12:10 pm (CDT)
* Proxy Bid Battle: In the event of two customers inputting matching proxy bids, the leading bid goes to the earliest of the two proxy bids. Tie winners are shown in bold.