1.70CT LW FLORESCENT SW PHOSPHORSCENT TENEBRESCENT COLOR CHANGE AFGHAN SCAPOLITE

Description

Be sure to add me to your
favorites list
!
Check out my
other items
!
Sign up for my email newsletters
by adding my eBay Store to your Favorite
We specialize in collector & high end colored gems not commonly found in retail stores. We strive to provide the best possible customer service and value. We stand behind our products and have the expertise of a GIA Graduate Gemologist to serve you.
Donald Hofler GIA GG, AJP
SEE OUR GROWING SELECTION OF SOME OF THE RAREST GEM STONES AND MINERALS ON EARTH IN OUR STORE. WE OFFER WELL OVER 100 DIFFERENT GEMS, MINERAL, SPECIES AND VARIETIES FOR SALE AND AUCTION AND OUR SELECTION IS GROWING. TAKE A PEAK AND IF YOU HAVE ANY QUESTIONS PLEASE ASK.
Pieces: 1
Shape: Pear Facet (See all photos below)
Type:  Scapolite
Color: Colorless
(This Scapolite has a strong Yellow Orange florescent reaction under LWUV light and under SWUV a Moderate Yellow florescent reaction, however, also as a reaction to SWUV light a change to a dark blue (Santa Maria Aqua / Corn flower Blue sapphire like color depending upon length of exposure) Phosphorescent reaction last several minutes to to hours depending upon the amount of natural light the stone is exposed to will created a Tenebrescent effect fading the stone back to it's natural colorless state. Also with this stone when taken outdoors in bright sunlight will change to a light Aqua Blue reverting back to colorless once brought indoors. Remember you cannot see the outdoor change if the stone is in the box as glass is a natural UV filter)
Weight: 1.70 CT
Clarity: VS2+/- (Type II)
(
PLEASE; If unsure of what clarity means see chart below for a more detailed explanation also remember colored gems are graded with the naked eye and not a loupe
)
Size: 10.1 x 7.1 x 4.8 mm
Luster: Vitreous
Origin: Afghanistan
(This is a fairly new deposit found in 2005 near the Hackmanite deposits in Afghanistan and the only one I am aware of displaying these UV
phenomena
and lower than normal refractive index in the 1.54 - 1.55 range with a very narrow Birefringence of only around .003)
Treatment: None
Hardness: 6.5-7.0 on MOHS
VVS 1 & 2
Extra Fine Quality. These gems have microscopic inclusions which are difficult to slightly difficult to see under a loupe with 10x magnification.
VS 1
Very Fine Quality. Small pin-pricks are just visible to the scrutiny of the close naked eye. However, the beauty of the gem is not diminished in anyway.
VS 2
Fine Quality. Small pin-pricks and feathers are just visible to the scrutiny of the close naked eye. However, the overall beauty of the gem is still not diminished.
SI 1
Good Quality. These gems have inclusions, which are fairly easy to see to the close naked eye. However, the overall beauty of the gem is still high.
SI 2
Good to Medium-High Quality. These gems have inclusions which are fairly easy to see under the close naked eye. These inclusions are usually not really visible at an arm's length.
Included
Medium to the lower qualities. Included gems with internal features that range from eye visible to very easily seen to the naked eye.
Pictures sell!
Auctiva Offers Free Image Hosting and Editing.
The complete eBay Selling Solution.
Track Page Views With
Auctiva's FREE Counter