1.755CT STUNNING UNHEATED COLLECTOR GEM AFGHANISTAN RASPBERRY BERYL PEZZOTTAITE

Description

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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 MINERAS ON EARTH IN OUR STORE. WE OFFER WELL OVER 100 DIFFERENT GEMS, MINERAL, SPECIES AND VARIATIES FOR SALE AND AUCTION AND OUR SELECTION IS GROWING. TAKE A PEAK AND IF YOU HAVE ANY QUESTIONS PLEASE ASK.
PICTURES; I AM A GRADUATE GEMOLOGIST WITH LIMITED PHOTOGRAPHY SKILLS. WHILE MY GEM & GEM TREATMENT SKILLS ARE VAST MY PHOTOGRAPH SKILLS ARE NOT & I CANNOT DO VIDEOS. ONE NEEDS TO MAKE A CHOICE, BUY YOUR RARE GEMS AND JEWELRY FROM A GEMOLOGIST WHO CAN ASSURE THT WHAT YOU ARE BUYING IS WHAT YOU ARE BUYING OR A PHOTOGRAPHER WHO TAKES GREAT PHOTOS AND MAY NOT GET THE GEM CALL CORRECT. AS FAR AS ADDITIONAL PHOTOS, THAT TYPICALLY WILL NOT HAPPEN, SORRY. I RARELY GET THE TIME TO TAKE PHOTOS WHEN I GET MY SET UP AND RUNNING SO ASKING FOR SPECIAL OR ADDITIONAL PHOTOS WILL GET A HONEST
RESPONSE, BUT, NOT LIKELY THE ONE YOUR LOOKING FOR SO IF THE ONE PHOTO YOU NEED TO PURCHASE MY ONE OF A KIND ITEM IS NOT THERE YOU MIGHT HAVE TO CONSIDER ANOTHER SELLER THAT CAN PROVIDE YOU THE PHOTO YOU NEED OR TRY IT ON YOUR OWN HAND WHEN IT ARRIVES.
​THANKS IN ADVANCE, DON HOFLER GIA GG, AJP
Pieces: 1
Shape: Round Facet
Type:  Raspberry Beryl / Pezzottaite
(Important; While part of the Beryl family and a Type III Gemstone this is not considered an Emerald nor is it Bixbite it is known as Raspberry Beryl, a marketing term, see below)
Color: Reddish Pink
Weight: 1.75 CT
A huge specimen as this material rarely exceeds 2 carats
Clarity: SI2-I (Type III)
(PLEASE; If unsure of what clarity means see chart below for a more detailed explanation) Stone contains natural feathers common to this material
Size: 7.5 x 7.5 x 5.5 mm
Luster: Vitreous
Origin: Afghanistan
Treatment: None
Hardness: 8.0 on MOHS
Pezzottaite
, marketed under the name raspberyl or raspberry beryl, is a mineral species first recognized by the International Mineralogical Association in September 2003. Pezzottaite is a cesium analogue of beryl, a silicate of cesium, beryllium, lithium and aluminum, with the chemical formula Cs(Be2Li)Al2Si6O18. Named after Italian geologist and mineralogist Federico Pezzotta, pezzottaite was first thought to be either red beryl or a new variety of beryl ("cesium beryl"); unlike actual beryl, however, pezzottaite contains lithium and crystallizes in the trigonal crystal system rather than the hexagonal system.
Colors include shades of raspberry red to orange-red and pink. Recovered from miarolitic cavities in the granitic pegmatite fields of Fianarantsoa province, southern Madagascar, the pezzottaite crystals were small—no more than about 7 cm (2.8 in) in their widest dimension—and tabular or equant in habit, and few in number, most being heavily included with growth tubes and liquid feathers. Approximately 10 per cent of the rough material would also exhibit chatoyancy when polished. Most cut pezzottaite gems are under one carat (200 mg) in weight and
rarely exceed two carats
(400 mg).
With the exception of hardness (8 on Mohs scale), the physical and optical properties of pezzottaite—i.e., specific gravity 3.10 (average), refractive index 1.601 to 1.620, birefringence 0.008 to 0.011 (uniaxial negative)—are all higher than typical beryl. Pezzottiate is brittle with a conchoidal to irregular fracture, and streaks white. Like beryl, it has an imperfect to fair basal cleavage. Pleochroism is moderate, from pink-orange or purplish pink to pinkish purple. Pezzottaite's absorption spectrum, as seen by a hand-held (direct vision) spectroscope, features a band at 485–500 nm with some specimens showing additional weak lines at 465 and 477 nm and a weak band at 550 to 580 nm.
Most (if not all) of the Madagascan deposits have since been exhausted. Pezzottaite has been found in at least one other locality, Afghanistan: this material was first thought to be cesium-rich morganite (pink beryl). Like morganite and bixbite, pezzottaite is believed to owe its color to radiation-induced color centers involving trivalent manganese. Pezzottaite will lose its color if heated to 450 °C for two hours, but the color can be restored with gamma irradiation.
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.
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