This collection presents mostly « rare gems » or « collector gems », more often not used in jewellery because of rarity or hardness. Rarity is due to the quantity available, or a rare color, source or inclusion, or the difficulty to cut the rough into a faceted gem. Microphotographies are taken with an old Olympus microscope and an iphone. These gems are not for sale, but some extra specimens may be available. The collection is visible but stored in a specific location, so please contact me for an appointment.
The collection brings together some of the rarest gems from North America, some of them are great rarities as faceted specimens like the Veszeinite or the bicolor Vesuvianite, or the exceptional large Charlesite.
Eudyalite crystals are very rare, even more in faceted gems because crystals are very small and usually very included. This one is very clear for the specie and comes from Mont Saint-Hilaire, Canada. The name of the gem signifies that it can easily be diluted into acid.
Boleite is a very rare cubic cristal and extremely rare as faceted gem, especially translucent. It contains silver, lead and copper. It comes from Baja California, Boleo, Mexico.
Rough: © wiki
The rarest of Beryl is the red variety also named Bixbite. It is one of the rarest gems in the world, and the mine in the Wah Wah mountain (Utah), it’s unique source, is now closed.
As emeralds the Bixbite quite included, and most of time enhanced with oil treatment.
Rare Ettringite from the Franklin Mine, New Jersey USA. The gem was to be a Charlesite, but inert to UV. Sent to a lab in London for Raman testeing with no result, it was sent to SSEF lab for RXF. No silicon was found, confirming Ettringite, but something went wrong with the vacuum and the gem was dehydrated.
Rough: © crystalclassics
Benitoite is a very famous rare gem. If some specimens were found in other locations, gem grade stones were only found in the Dallas Gem Mine, San Benito, California. The mine is now closed. This gem is a bit dark but clarity is ok.
Tugtupite is a rare mineral from Groenland, Tasseq Slope, Kitaa province. Gem specimens are extremely rare and usually very small and very included. Tugtupit also present a very interesting tenebrescence (color intensity change wit light exposure) and a very strong uv reaction.
Rough: © mineralienatlas.de
Rhodocrosite is mostly opaque. Faceted specimen are extremely rare because the stone has a perfect cleavage and is one of the most difficult to cut.
This specimen is even more unique as it comes from one of the best source the famous Sweet Home Mine, Alma Colorado, now closed, and present the best color and exceptional « flawless » clarity, brilliance is amazing for the specie. View of « finderprint » and « two-phase » inclusions .
This small Chrome Pyrope comes is an Anthill garnet. It comes from the Navajo Indian Reservation in Arizona, and is not mined. Small ants digg the ground to create their homes and that’s how some garnets can be gathered time to time around the anthills! Most of these stones are under one carat, to this is a very good size for this uniquer and rare gem.
The « spiderman » jasper comes from the border between Oregon and Idao, USA. This specimen is of the best quality and is scarce.
Veszelyite is a rare copper mineral. Faceted gem are exceedingly rare, only a view examples on the market! It comes from the Black Pine mine, Montana, USA
Vesuvianite is usually yellow, from Kenya. This bicolor example is an extreme rarity. Mangano-vesuvianite is bright purple due to manganese and comes only from the Jeffrey Mine, Quebec. Crystals are small and fragile and almost never faceted. This one is even more unique, with a yellow zoning inside. The Jeffrey Mine was the only known source and is now closed. This specimen presents what seems to be a pseudomorphic remain of a rhombic inclusion.
Shortite is extremely rare, and faceted gems are among the rarest faceted gems. It is very difficult to cut as it decompose with water. This one comes from Mt-St-Hilaire. Only a view transparent specimens discovered in 1991 were faceted.