Minerals | By_Name | By_Class | Sulfates | Gypsum

Gypsum Specimens



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# GYP-81, $60.00 Sold!
Dims: 3.77x2.73x1.41in (9.58x6.93x3.57cm) .... Wt: 7.3oz (208g) .... Loc: Naica, Chihuahua, Mexico
I really like this selenite (colorless transparent gypsum) specimen, even though it does not have any large perfect crystals. Instead, it is largely composed of transparent selenite plates, many of whose tips are tinted black due to inclusions, and most have a partial coating of white gypsum. In some cases, the white is interior to the selenite. In any case, this specimen is a study in contrasts, between the black, white, and transparent colorless crystals.
# GYP-80, $30.00 Sold!
Dims: 6.22x0.22x0.18in (15.79x0.56x0.47cm) .... Wt: 0.250oz (7.00g) .... Loc: Thornhill Cave, Kentucky, USA
This is a long, narrow, and curved cluster of selenite (gypsum) crystals. It appears to be a number of crystal fibers comprising the core of the specimen, coated on the outside by a druze of additional gypsum crystals. It looks rather fragile.
# GYP-77, $30.00 Sold!
Dims: 5.18x2.96x1.06in (13.15x7.52x2.68cm) .... Wt: 7.0oz (197g) .... Loc: unknown
This is a very nice specimen of selenite (clear gypsum), consisting of one large parallelogram plate with additional crystals attached in a generally aesthetic manner. Many of the crystal tips are slightly damaged, and there are many gray to black inclusions which reduce transparency, but I still like it.
# GYP-79, $60.00 40% Discount - Sale Price $36.00
Dims: 5.82x3.30x3.01in (14.78x8.38x7.66cm) .... Wt: 27.0oz (764g) .... Loc: Minas Gerais, Brazil
This is an excellent single crystal of gypsum, and being colorless and transparent it is the variety called selenite. The surface texture is sometimes vitreous, and on some surfaces it is silky, almost like the satin spar variety. There is a minor amount of damage, something nearly unavoidable with such a soft mineral.
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Minerals | By_Name | By_Class | Sulfates | Gypsum

 

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