Rosell Minerales

Interesting quartz crystals with several inclusions of "petroleum" and other hydrocarbons. The petroleum in these quartz crystals from Madagascar appear brownish yellow and, as with many other petroleum inclusions in quartz, they react to long and short wave UV light with yellow to blue fluorescence. Microscopic examination reveals numerous complex fluid inclusions containing obvious brownish yellow petroleum, gas bubbles presumed to be methane, dark solids of what is likely asphaltite, and a colorless immiscible liquid that could be probably water. Microscopic inclusions in quartz are of particular interest to the collector due to their spectacular UV reaction (gia.edu).

Size: 6.5 x 1.9 x 1.7 cm.
Found in ±2022.

Fluorescent under LW-UV and SW-UV lights

Interesting scepter quartz crystals with several inclusions of "petroleum" and other hydrocarbons. The petroleum in these quartz crystals from Madagascar appear brownish yellow and, as with many other petroleum inclusions in quartz, they react to long and short wave UV light with yellow to blue fluorescence. Microscopic examination reveals numerous complex fluid inclusions containing obvious brownish yellow petroleum, gas bubbles presumed to be methane, dark solids of what is likely asphaltite, and a colorless immiscible liquid that could be probably water. Microscopic inclusions in quartz are of particular interest to the collector due to their spectacular UV reaction (gia.edu).

Size: 5.5 x 2 x 1.4 cm.
Found in ±2022.

Fluorescent under LW-UV and SW-UV lights

Interesting scepter quartz crystals with several inclusions of "petroleum" and other hydrocarbons. The petroleum in these quartz crystals from Madagascar appear brownish yellow and, as with many other petroleum inclusions in quartz, they react to long and short wave UV light with yellow to blue fluorescence. Microscopic examination reveals numerous complex fluid inclusions containing obvious brownish yellow petroleum, gas bubbles presumed to be methane, dark solids of what is likely asphaltite, and a colorless immiscible liquid that could be probably water. Microscopic inclusions in quartz are of particular interest to the collector due to their spectacular UV reaction (gia.edu).

Size: 4.2 x 2.2 x 1.3 cm.
Found in ±2022.

Fluorescent under LW-UV and SW-UV lights

Interesting scepter quartz crystals with several inclusions of "petroleum" and other hydrocarbons. The petroleum in these quartz crystals from Madagascar appear brownish yellow and, as with many other petroleum inclusions in quartz, they react to long and short wave UV light with yellow to blue fluorescence. Microscopic examination reveals numerous complex fluid inclusions containing obvious brownish yellow petroleum, gas bubbles presumed to be methane, dark solids of what is likely asphaltite, and a colorless immiscible liquid that could be probably water. Microscopic inclusions in quartz are of particular interest to the collector due to their spectacular UV reaction (gia.edu).

Size: 3.7 x 2.2 x 1.5 cm.
Found in ±2022.

Fluorescent under LW-UV and SW-UV lights

Interesting scepter quartz crystals with several inclusions of "petroleum" and other hydrocarbons. The petroleum in these quartz crystals from Madagascar appear brownish yellow and, as with many other petroleum inclusions in quartz, they react to long and short wave UV light with yellow to blue fluorescence. Microscopic examination reveals numerous complex fluid inclusions containing obvious brownish yellow petroleum, gas bubbles presumed to be methane, dark solids of what is likely asphaltite, and a colorless immiscible liquid that could be probably water. Microscopic inclusions in quartz are of particular interest to the collector due to their spectacular UV reaction (gia.edu).

Size: 4.5 x 1.6 x 1.6 cm.
Found in ±2022.

Fluorescent under LW-UV and SW-UV lights

Group of hyaline quartz crystals, very transparent, brilliant, with complex shapes due to polycrystalline and window growths. With orange inclusions. Very aesthetic and interesting specimens from a new Malagasy locality.

Size: 4.8 x 4.2 x 2.2 cm.
Found in 2018.

Curious parallel growth of quartz crystals in scepter. A very aesthetic miniature of a new locality in Madagascar.

Size: 3 x 1.5 x 1 cm.
Found in 2018.

Group of hyaline quartz crystals, very brilliant, one of them more developed and showing the scepter growth stands out. With polycrystalline growths. An aesthetic novelty from Madagascar.

Size: 3.8 x 2.7 x 1.8 cm.
Main crystal: 2.7 cm.
Found in 2018.

Aesthetic quartz specimen, very transparent and with orange inclusions. It shows a very curious window growths and some facets of the rhombohedron. These specimens come from a little-known locality. Really interesting.

Size: 4.3 x 3 x 1.9 cm.
Found in 2018.

Group of doubly terminated quartz crystals, very transparent and with orange inclusions. With prisms and terminal faces with very evident polycrystalline and window growths. These specimens come from a new not well-known locality. Very aesthetic and pure brilliance.

Size: 5.7 x 5.2 x 2.6 cm
Main crystal: 5.7 cm.
Found in 2018.