Quartz with inclusions
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.
Quartz is one of the most common and collected mineral. But some quartz feature incredible inclusions. Some are other minerals, some are negative crystals, and sole are liquid/gaz inclusions. The collection brings together a selection of fascinating specimens, some among the rarest in this group as the copper fluid or the covellite from Brazil, and one of the best ever faceted petrolium from Pakistan.
Quartz with three-phase petrol inclusion from Balochistan, Pakistan. Small negative crystals contain the three natural phases of petrol: petrol (green or yellow liquid), methane (gaz bubble), bitumen (black dots). These are quite rare and difficult to facet because of the negative crystals. They have a beautiful glow under long UV. This specimen is one of the most amazing ever. One large cavity is well centered. It contains a large bubble freely moving. More of this we can perfectly see several bitumen also moving and falling like a snow ball! One single bitumen is also present on one side of the stone. A fantastic unique piece.
Quartz Leopard is a quartz with brawn dots, due to a natural irradiation source (the smokey quartz is a fully naturally irradiated quartz). This astonishing Brazilian piece was perfectly cut to isolate a single smokey sot, creating a fantastic optical effect.
Quartz with three-phase petrol inclusion from Balochistan, Pakistan. Small negative crystals contain the three natural phases of petrol: petrol (green or yellow liquid), methane (gaz bubble), bitumen (black dots). These are quite rare and difficult to facet because of the negative crystals. On pictures we can see the strong long uv reaction and the reflection of a bitumen on the methanols gaz bubble.
Pink fire quartz from Minas Gerais, Brazil. This amazing variety contains covellite inclusions. Covellite is dichroic. It appears green in transmitted light, and metallic pink in direct light. The result is a spectacular pink flash depending the orientation of the stone. This specimen is very large and has a lot of inclusions, a fine one.
Quartz with rare Piemontite (Epidote var.) inclusion from Madagascar, with very good clarity and color.
Amethyst from Minas Gerais Brazil, with a rare cristobalite inclusion, dur to a very high temperature during the growth. Even more rare, wonderful Goethite crystals are attached to the cristobalite, like miniature feathers!
Quartz with rare Lazulite inclusions, in a very good transparency and blue color. From Madagascar.
Rare quartz from Minas Gerais Brazil, with a doubly terminated rubellite tourmaline. Very interesting pleochroism.
Quartz with a great blue fluorit crystal inclusion, from Miandrivaso, Fianarantsoa Province in Madagascar. The mine is now almost closed.
Extremely rare quartz with blue fluid inclusions, probably copper sulphate, from Bahia Brazil. This 21,45ct specimen is very huge for the specie.
A great rarity in the quartz with inclusions, studied by GIA’s John Koivula here: