Gem orthoclase
Origin: Itrongay, Tulear, Madagascar
ex. Ed David Collection
Sample size: 5.5 x 5 x 3 cm
Adularia, complex penetration twin
Origin: Alchuri, Shigar Valley, Baltistan, Northern Areas, Pakistan
Sample size: 6 x 3.8 x 3.7 cm
Carlsbad twin
Origin: Karlovy Vary (Carlsbad), Bohemia, Czech Republic
Sample size: 3.5 x 3.5 x 2 cm
Adularia and pericline, coated with chlorite
Origin: Acushnet, Bristol Co, Massachusetts, U.S.A.
Sample size: 11 x 9 x 5 cm
The Arkenstone
Faden adularia
Origin: Alchuri, Shigar Valley, Baltistan, N.A., Pakistan, Asia
Sample size: 6.2 x 2.1 x 1.2 cm (top), 7.6 x 4.8 x 2.1 cm (2nd/3rd row), 3.5 x
1.4 x 0.9 cm (4th row), 4.8 x 1.3 x 0.5 cm (5th row), 3.8 x 2.1 x 0.6 cm
(bottom)
Fluorite
on orthoclase (Carlsbad twin) with small
schorl
crystals and a small barely noticeable
beryl
set on the side
Origin: Erongo Mountain, Namibia
Sample size: 5.8 x 4.8 x 4 cm
Beryl on
orthoclase (Baveno twin)
Quartz on
orthoclase (Baveno twin)
This specimen has two complete baveno twins of orthoclase to 3.2cm in length
with a 3.1 cm crystal of water clear
quartz
attached to it.
Origin: Xuebaoding Mountain, Ping Wu, Sichuan, China
Sample size: 4.3 x 3.2 x 2.7 cm (top), 3.5 x 3 x 1.8 cm (2nd row), 5.4 x 3.3 x
2 cm (3rd/bottom row)
John Veevaert, Trinity Mineral Co
