Doubly terminate crystal of neptunite to 2.9 cm on white
natrolite
matrix
Three large neptunite crystals to 3.5 cm contrasting well on
natrolite
matrix
Dozens of lustrous jet black neptunite crystals, mostly to about 6-1 cm in
size but also a large, thick prismatic neptunite crystal perched nicely at the
center to 2.5 cm long and 1cm wide. There is also a nice blue 1.2 cm
benitoite
crystal amongst the neptunite
Fine neptunite specimen with a few
benitoite
crystals to 5 mm. The neptunite is very lustrous and the crystals reach 2.7 cm
This specimen has a large neptunite 5.5 cm long situated perfectly at the
center with a small
benitoite
crystal to 1 cm right below it
Origin: Benitoite Gem mine, San Benito Co., California, United States
Sample size: 3.5 x 4 x 1 cm (top), 7.5 x 6 x 3 cm (2nd row), 6 x 6 x 3 cm (3rd
row), 8.5 x 5 x 2 cm (4th row), 7.5 x 6 x 2 cm (bottom)
Dakota Matrix Minerals
Origin: Ilimaussaq, Narssaq, Greenland, Denmark
Sample size: micromoount
Origin: Gem mine, Clear Creek, San Benito County, California, U.S.A.
Ex. Marvin Pearce coll.
Sample size: 11 x 7.5 x 2.5 cm
Origin: San Benito Co., California, U.S.A.
Sample size: 7 x 7 x 14 mm (top), 5 x 6 x 15 mm (bottom)
Ex. Marilyn Dodge collection
Ex. Marty Lewadny collection
Origin: Dallas Gem Mine, San Benito County, California, U.S.A.
Sample size: 3.6 x 1.2 x 1 cm (top/2nd row), 5.8 x 5.4 x 3.6 cm (3rd/4th
row), 4.4 x 3.4 x 2.7 cm (5th/bottom row)
