Origin: Sakoany, Madagascar
Sample size: 9 x 7 x 7 cm, crystals to 2 cm
Origin: Briar quarry, Weyerhauser Co., Arkansas, U.S.A.
Sample size: 6 x 4 x 2 cm with several light blue crystals, the largest to 1.2
cm
Origin: Pennington Co., South Dakota, USA
Sample size: 5 x 4 x 4 cm, crystal 2.5 cm
Origin: Pennington Co., South Dakota, USA
Sample size: 3.5 x 3 x 2 cm, crystals to 2 cm
Origin: Bainev-Kur, Torkmenia, Russia
Sample size: 6.5 x 3 x 3 cm, crystals to 1 cm
Origin: Mackville, Outagamie Co., Wisconsin, USA
Sample size: 2.8 cm crystal
Origin: Lime City, Ohio, U.S.A.
Sample size: 4 x 3 x 3 cm, largest crystal 3.5 x 1.5 cm
Origin: Penfield quarry, Penfield, New York, United States
Eaton Collection
Sample size: 4.5 x 2.5 x 1.5 cm
Origin: Bigadic, Marmara Region, Balikesir Prov., Turkey
Ex. DeVito Collection
Sample size: 4 x 3 x 3 cm
Origin: Billie mine, Death Valley, California, United States
Ex. Eaton Collection
Sample size: 4.5 x 3 x 3 cm
Origin: Madagascar
Sample size: 7 x 6 x 3 cm
Light blue cores with white rims, pseudohexaganl, terminated crystals to
1.5cm.
Origin: Wood County, Ohio, United States
Ex. Kidwell collection
Sample size: 6 x 3 x 3 cm
ex. Ed David & John Medici collections
Origin: Holloway Quarry, Newport, Michigan, U.S.A.
Sample size: 10.5 x 9 x 4 cm
Origin: Sakoany Mine, Majunga, Madagascar
Sample size: 17 x 14.5 x 11 cm
Origin: Wessels mine, Kalahari, South Africa
Sample size: 4 x 3 x 3 cm