Christopher Wentzell favorited Paulo Dominonni's video
Feb 9, 2019
Christopher Wentzell posted a photo
A liquid-filled glass display dome with precious opals from Virgin Valley, Nevada, USA.  Opals from this locality form, and are mined from, an in-place deposit within a defined zone of bentonite/montmorillonite, which can be traced through the…
Feb 9, 2019
Christopher Wentzell updated their profile
Feb 9, 2019