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Brazilianite 3.6 x 2.15 cm

25.00 €

Réf: M2858

Crystalline system: Monoclinic. Chemical formula: NaAl3(PO4)2(OH)4. Hardness: 5.5. Density: 2.98. Phosphate group: Basic sodium and aluminum phosphate.
Brazilianite 4.1 x 2.7 cm

30.00 €

Réf: M2857

Crystalline system: Monoclinic. Chemical formula: NaAl3(PO4)2(OH)4. Hardness: 5.5. Density: 2.98. Phosphate group: Basic sodium and aluminum phosphate.
Brazilianite 3.6 x 2.6 cm

30.00 €

Réf: M2856

Crystalline system: Monoclinic. Chemical formula: NaAl3(PO4)2(OH)4. Hardness: 5.5. Density: 2.98. Phosphate group: Basic sodium and aluminum phosphate.
Brazilianite 2.8 x 2.7 cm

25.00 €

Réf: M2855

Crystalline system: Monoclinic. Chemical formula: NaAl3(PO4)2(OH)4. Hardness: 5.5. Density: 2.98. Phosphate group: Basic sodium and aluminum phosphate.
Brazilianite 3.4 x 2.1 cm

25.00 €

Réf: M2854

Crystalline system: Monoclinic. Chemical formula: NaAl3(PO4)2(OH)4. Hardness: 5.5. Density: 2.98. Phosphate group: Basic sodium and aluminum phosphate.
Crystallized Quartz

250.00 €

Réf: M2839

Multitude of small quartz points on an 11 cm long ...
Crystallized Quartz

350.00 €

Réf: M2843

Large rock crystal slab...
Crystallized Quartz

190.00 €

Réf: M2837

Crystallized quartz point...

A large quartz point encrusted with several small crystals along its height.
Crystallized Quartz

190.00 €

Réf: M2836

Luminous rock crystal filled with crystals.

Rock crystal with perfectly transparent points of all sizes.
Crystallized Quartz

192.00 €

Réf: M2835

Magnificent rock crystal block.

Totally translucent rock crystal with multiple points of all sizes.
Crystallized Quartz

120.00 €

Réf: M2834

Very luminous.

Cluster of beautiful, well-formed, transparent, and luminous quartz crystals.
Rock Crystal

90.00 €

Réf: M2833

Pretty translucent rock crystal.

Rock crystal with one large and two small points.
Crystallized Quartz

120.00 €

Réf: M2832

Magnificent four-pointed rock crystal.

Approximately 5 cm rock crystal with 4 large thick points.
Crystallized Quartz

120.00 €

Réf: M2831

Elongated rock crystal block...

5.5 cm wide block with 5 thin points, about 6 cm high.
Crystallized Quartz

190.00 €

Réf: M2830

Crystallized rock crystal block with quartz ...

7 cm long rock crystal block with a point significantly protruding from the block.
Vesuvianite (Idocrase)

15.90 €

Réf: M1867

Rare gem, Vesuvianite or idocrase with some ...

Crystals (tetragonal system) included in the rock, in short, thick prisms with vitreous or greasy luster. Hardness: 6 1/2. Density: 3.27-3.45.
Vesuvianite (Idocrase)

11.70 €

Réf: M1864

Rare gem. White traces are probably kaolin, ...

Crystals (tetragonal system) included in the rock, in short, thick prisms with vitreous or greasy luster. Hardness: 6 1/2. Density: 3.27-3.45.
Vanadinite on rock

91.70 €

Réf: M2292

9mm crystals.
82.50 €

Réf: M2285
43.40 €

Réf: M1271
Vanadinite on psilomelane

90.00 €

Réf: M2284

Hexagonal crystals up to 4 mm, on manganese oxide (Psilomelane) with a thin layer of wad and limonite
Vanadinite on Baryte

121.00 €

Réf: M506

Vanadium ore. Very beautiful crystals about 5 mm ...
Vanadinite on Baryte

29.20 €

Réf: M512

small sample of a particularly brilliant orange
Vanadinite with baryte

40.00 €

Réf: M1993

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