Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Fluorite

Views:
Watches:
JNM617600

Fluorite

Description Tabs

Description
Locality: 
Wanni Glacier, Monte Cervandone, Binn Valley, Wallis, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 5 × 3.5 cm
Description

Alexandrite effect: color-change fluorite appearing green in daylight, but partially purple under incandescent illumination. This is extremely rare material from the only known locality in the entire Alps to produce such specimen. This color change has been named "Alexandrite effect" in analogy to the chromium-rich chrysoberyl variety. Given their abundance in the Binn Valley, the effect is supposed to stem from rare earth element doping increasing the crystals effective optical transmission in the red. The fluorite on hand measures 12 mm along its longest dimension and exhibits a rounded shape based on a rhombic dodecahedron.

The close-up images are each taken under daylight or candle light (white balance adjusted) respectively.

Mineral Data
What's on the rock

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Current price

$

Starting price

$10
(reserve not met) (reserve met)

You are the highest bidder

You have been outbid

Proxy bid set
$
Delayed bid pending at
$
Delayed Bid is Outbid

Your maximum bid $:

(Enter or more)

Start 12 Nov 18:00
End
No. of bids view history

Shipping Information

Postage Area Price
Germany
7
EU
7
Rest Of World
11

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Bid History

Full bid history

Item Toolbox