Bread Crumb Link
 One Of a Kind Rocks

One Of a Kind Rocks

 Maintained by:
 We have been in the lapidary field for over 35 years! We hand cut most of our own items. We carry stone slabs (polished and unpolished), eggs and spheres, animal carvings, rough rock, cabochons and more. U.S.A. dealer and unless otherwise stated you always get the exact item pictured!

Store search

Store categories

Store pages

  • Fluorescen​t Minerals
Please Note!

My items are One of a Kind. 

Due to the natural stone materials each piece is different - colors and patterns will vary.  Pieces may include natural fracture lines, pits, or inclusions.  I will always list any major flaws. 

Unless otherwise noted, I will always send you the item shown in the picture.

 

Fluorescent Minerals

I am not a specialist in fluorescent minerals.  But in my years as a rock dealer I have seen many fantastic dark room displays of rocks glowing in all colors of the rainbow!  Many times when the UV light (Ultaviolet) is switched off and the regular lights switched on, the minerals are very unexciting and not colorful at all.

I do have a UV light and I like to check out some minerals now and then (as well as the scorpions around here!).

Often I am asked if one of the minerals I sell on ebay will fluoresce.  The truth is-I don't usually know.  But keep asking cause I'll try and check it for you.  

I thought it would be fun to privide some basic information for the beginner collector:

Fluorescence is caused by the incorporation of small metal impurities in the mineral.  These impurities often affect the color of the mineral.  Copper can make a mineral green or blue, mangnese can make them purple or pink, etc.  Some of the trace minerals that fluoresce are chromium, manganese, cobalt, nickel, tungsten, etc.  Because each mineral may contain a variety of these metals, not all minerals that are the same, will fluoresce the same.  Fluoresce can help identify a mineral, but is actually more reliable in determining a origin as many deposits have very distinct fluorescence.  If iron is is present in any amount-it will prevent fluorescence!

The word "fluorescence" comes from the mineral fluorite, which was the mineral on which this light phenomenon was first discovered.  Of course, strangely enough, only a little of fluorite responds to UV light!  Minerals are displayed under a UV light with both long waves and short waves, as some will only fluoresce under one type of wave.  The strength of the glow and the colors vary greatly.  Sometimes the glow will persist even after the UV light has been turned off.  This effect is called phosphorescence.

Scheelite, or calcium tungsten, is one of the few rare minerals that always fluoresces, no matter where it came from.  This is why tungsten wire is used in light bulbs!

 

Here is a partial list of fluorescent minerals and their common reactions:

Agate-can be strong, usually yellow or blue-white

Amazonite-weak, usually olive green

Amethyst-weak, usually greenish

Aventurine-reddish

Calcite-can be red, pink, orange, white, or yellow-white

Chalcedony-bluish white

Diamond-varies considerably

Fluorite-usually strong, blue to violet

Labradorite-yellow striations

Lapis Lazuli-strong, white

Prehnite-weak, orange

Rhodochrosite-weak, red

Rose Quartz-weak, dark violet

Scheelite-blue,whitish, or yellow

Sodalite-strong, orange

Sphalerite-usually yellow to orange, sometimes red

Tourmaline-can be colorless to weak, or many other colors

Turquoise-weak, greenish-yellow, light blue

Willemite-green