Scapolite - The Rare Yellow Gem
SCAPOLITE - An African Gem
An African gem that comes in yellow and purple shades. It is rarely seen in commercial jewelry stores in either of the two common colors.
Scapolite
Click Here for Techinical Specification
Scapolite is commonly a mineral of metamorphic origin. It is grayish white which occurs in tetragonal crystals and in cleavable masses. For such color, it is sometimes also called Wernerite.
Scapolite
Chemical composition -- A sodium or calcium aluminum silicate.
Color -- Colorless, yellow, purple, pink.
SCAPOLITE
Overview: Scapolite, which is Greek for "shaft", is commonly found in stubby to long prismatic crystals, hence the name.
Enhancements
Scapolite is not enhanced, however violet scapolite is produced by heat treatment.
More information on gemstone enhancements.
Scapolite ...
[Scapolite = 6, Tanzanite = 6.5, garnet = 7. - 7.5, tourmaline = 7.5]
Hard Gems
...
scapolite, diopside, calcite, wollastonite, kimberlite, tremolite
Locals:
Misc: ...
Scapolite
Avoid steam and ultrasonic cleaning
Commonly dyed or waxed to improve appearance or alter colors ...
Scapolite
Changing/introducing color
(American Mineralogist, vol. 32, p 31-43 jan-feb 1947. Reported in G&G spring 1947) ...
Scapolite
You won't find scapolite without looking, but there are some beautiful yellow, violet and pink ones out there for the avid gem hunter. It does come in a few more colors and in cat's-eye form but these are really hard to find.
5405 - Scapolite - $35.00
Minas Gerais, Brazil
MINIATURE, 3.5 x .5 x .5 cm ...
Mark found a great selection of purple scapolites from Tajikistan that were excellent single crystals, but will probably be sacrificed to the cutting wheel due to the increased sums gem collectors will pay.
Scapolite melts more easily and is or becomes on heating, fluorescent in long wave UV. Epidote melts readily to black slag
Adamantine spar ... see Corundum
Adamite
zinc arsenate: Zn2(AsO4)(OH) ...
Lapis Nevada is a pink and green gemstone, and is composed of no fewer than 11 minerals: thulite, scapolite, sericite, diopside and epidote, with minor amounts of feldspar, quartz, zoisite, clinozoisite, actinolite and apatite.
Figure 5 - Specimen of scapolite and epidote crystals 7 inches across from the pipeline excavation. Wesleyan University Natural History Museum Collection No. 489.
Petalite - LiAlSi4O10
Scapolite group
Marialite - Na4(AlSi3O8)3(Cl2,CO3,SO4)
Meionite - Ca4(Al2Si2O8)3(Cl2CO3,SO4) ...
Honorable Mention
Roger L. Dery
Spectral Gems, Inc.
14.22 ct. square emerald-cut Scapolite.
* TETRAGONAL: The tetragonal crystal system requires a single four fold axis of rotation. Instances of minerals and crystals in this system are zircon, carletonite, rutile, scapolite, anatase, vesuvianite, narsarsukite, autunite, xenotime, thorite, ...
viewed as displayed on an actual crystal of scheelite (blue faces on fig. 4.12b), the true symmetry is revealed.Minerals possibly expressing this closed crystal form, aside from scheelite,include powellite, fergusonite, and members of the scapolite ...
This is because tsavorite is notoriously difficult to mine, requiring a good understanding of geology. Seams suddenly disappear, giving no indication where to look next and its crystals are often found inside quartz or scapolite “ ...
 See also: Stone, Color, Crystal, Gemstone, Rough
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