|Beautiful gem pyrope collected by the author from the |
Butcherknife Draw region, SW Wyoming.
The stone was faceted in Sri Lanka.
|Beautiful garnets I found in anthills in the Green River|
Basin that I sent to Sri Lanka to be cut to show variance
|Wow! Now here is a beautiful pyrope - from Green River |
|Varieties of garnets surrounding chrome diopside from |
Colorado and Wyoming.
|Spessartine garnet from Wyoming.|
Pyropes mined by ants from Butcherknife Draw
area of the Green River Basin, Wyoming.
When found in metamorphic or pegmatite rocks, garnets typically range from millimeter-size to large crystals of 5 to 6 inches in diameter. Many of these are reddish brown to brown and mostly opaque. The largest garnets I ever found were in kimberlite and pegmatite. But such large garnets were not attractive other than for mineral collectors.
Faceted pyrope garnet from Butcherknife Draw, Green River
Basin. The garnet has the distinct purplish color of pyrope (a
jeweler would likely call this rhodolite).
Garnet lherzolite nodule from the Aultman kimberlite,
Wyoming showing rounded gem-quality purple pyrope with
some green chromian diopside in serpentine matrix.
|Chlorite pseudomorph after almandine from Oldman property, |
Wyoming. Note the distinct dodecahedral crystal habit.
|Parcel of pyrope and chromian diopsides from diamondiferous lamprophyre |
at Cedar Mountain, Wyoming. Essentially all of these stones are gem-quality
Where diamonds, chrome diopside and pyrope come from.
Large pyrope metacryst in kimberlite from the Sloan 2 kimberlite, Colorado.
|Location map showing Butcherknife Draw area (Green River Basin Kimberlite |
Indicator Mineral Anomaly) in Wyoming – a great place for field trips.
MORE INFORMATION ON GEMSTONES
See the GemHunter