Fine thumbnail of Brazilian Chrysoberyl. A crystal cluster vintage 1948 with a dated but badly tattered Shortmann's Minerals label included that puts this piece at the very beginning of Brazilian specimens being exported. Good glassy luster, translucent to gemmy transparent areas and nice green-yellow color with classic twinned forms. Some reddish inclusions are seen that add a little contrast but no matrix, a floater this is complete all around. The original label is spelled Collentina which is not correct but this misspelling was used by both Arthur Montgomery and Alan Kaplan at that time. Either person could have been the source of this piece.
Classic form Chrysoberyl from the Ragged Ass Jack Mountain find in Maine, USA. This is a complete crystal, fully transparent and with nice color. The twinning can be clearly seen by the distinct striations. This thumbnail is from the Larry White collection which he obtained almost 50 years ago from Phil Scalisi who in turn got this from the Grace Dearborn collection. For this locality the quality and condition is super, a few larger crystals are known but those are far less sharp, gemmy and complete. A rare and choice USA Thumbnail and a fine Oxford County, Maine piece as well.
Chrysoberyl - Twinned crystals
3.1 x 2.4 x 1.8 CM (small miniature/ large thumbnail (toenail))
A floater cluster complete all around of Chrysoberyl crystals that range from translucent to transparent. A pale yellow-green color with some frosted faces and others that are bright and lustrous. Some chipping on the underside (not seen when displayed) is the only damage to note, some of that seems to be partly rehealed, so this is a natural break. Otherwise this is in fine condition overall and weighs 19.2 grams.
Chrysoberyl -classic, co-type locale
Chrysoberyl Locality, Middlesex Turnpike, Haddam
2 x 1.7 x 1.5 (thumbnail)
Late Summer 2018
A small but significant Chrysoberyl from the Haddam Connecticut locality that was the first place the mineral was found in situ in 1810. Mindat offers a detailed report on this long closed locality that makes great reading.
The main Chrysoberyl on this matrix is .8 CM and is sharp, translucent and a good yellow-green. Ex Larry White collection, these old Chrysoberyls are not often available. The collecting was most active in the early to mid 19th century and it seems by 1901 the original spot was no longer accessible. A choice classic thumbnail for this important locality.
A classic form for Chrysoberyl showing an inverted V twin well-exposed on matrix. From the finds in the 90's at Colatina, this is a sharp crystal in fine condition. Hard to find any of quality on the market now, this has textbook form. Perfect by naked eye, some micro contacting (mostly on the back side) is evident with magnification.
3.6 x 3.3 CM (small miniature/ large thumbnail (toenail))
A very fine prismatic central prism is joined by 2 other smaller "wing" crystals forming one half of the classic sixling twin. The crystals are all glassy yellow-green and gemmy with many inclusions. The central crystal is big at 3.3 CM in size and has minimal damage on the display side. The back of the specimen is contacted and broken but it is not in view from the display side. This is a good piece showing lots of form and character!