Rockyard Thunderegg w/ Chalcedony and Calcite - UVc

 

From Eastern Oregon, USA comes this 2.25" wide cut thunderegg.

 

Contains:

Chalcedony (FL Green,Blue >UVbc)

Calcite (FL Red >UVbc)

 

Shown under UVc light.

 

Key:

WL = White light

FL = Fluoresces

PHOS = Phosporescent

UVa = 368nm (LW), UVb = 311nm (MW), UVc = 254nm (SW)

'>' = "stimulated by:"

 

Obtained from Highland Rocks and Gems' Rockyard, Burns OR, USA.

 

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Photostream best viewed in Slideshow mode (in the dark).

 

18 Watt Triple Output UV lamp from Polman Minerals - Way Too Cool UV lamps

Done