Dioptase (unusual form) (2019 find)

Ntola Mine, Mindouli, Mindouli District, Pool Department, Republic of the Congo
Small Cabinet, 5.5 x 3.7 x 1.8 cm
Start Time: 10/01/2020 8:45:00 pm (CDT)
End Time: 10/08/2020 6:45:00 pm (CDT)
Auction Closed
Winning Bid: $129

Item Description

PLEASE NOTE: These specimens were initially reported as coming from the Mpita Mine, but we have subsequently been informed that they are actually from the Ntola Mine. This piece is from a recent find in January of 2019. Most collectors love Dioptase, but there aren't that many world localities that produce excellent specimens. Earlier this year we were fortunate to purchase a small parcel of these brand new specimens from the Mindouli area in Republic of the Congo (Brazzaville). This specimen is notably different from many of the others we've seen in the past as it feature somewhat spherical / "bubbly" hollow forms ("casts") of Dioptase which might have formed after a botryoidal mineral like Chrysocolla or Shattuckite (some have suggested it could be spherical Calcite or Aragonite), or it could be the result of a gas bubble that was crystallized on the exterior. The surface of these "bubbles" piece feature many tiny, sharp, lustrous, rich emerald green trigonal Dioptase crystals, but they are clearly concave underneath as seen in a few of the contacted / exposed "balls". Additionally, upon close inspections there are a several small brilliant orange Wulfenite crystals that can be seen. Wulfenite and Dioptase are rarely found together in nature, and the combination of the orange and green together is wonderful. I had a lot of fun looking at this piece under the microscope, and we have photographed it with a CANON MP-E 65 mm macro lens to better illustrate the quality. A desirable and eye-catching specimen from this exciting locality in Republic on Congo. Priced in the inventory at $500.

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Bidding History

Bid Amount Bid Time
$129 10/05/2020 3:29:03 am (CDT)
$127 10/05/2020 3:29:02 am (CDT)
$119 10/05/2020 3:28:00 am (CDT)
$109 10/05/2020 3:28:00 am (CDT)
$99 10/04/2020 6:24:38 pm (CDT)
$89 10/03/2020 8:33:35 pm (CDT)
$80 10/03/2020 8:33:35 pm (CDT)
$70 10/03/2020 8:33:29 pm (CDT)
$60 10/03/2020 8:33:29 pm (CDT)
$50 10/03/2020 8:33:23 pm (CDT)
$45 10/03/2020 8:33:23 pm (CDT)
$40 10/03/2020 8:33:15 pm (CDT)
$35 10/03/2020 8:33:15 pm (CDT)
$30 10/03/2020 3:59:10 pm (CDT)
$25 10/03/2020 3:59:10 pm (CDT)
$10 10/02/2020 10:35:31 pm (CDT)