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RM3560   Celestine and colemanite
Sr(SO4)
  -  7. Sulfatos, cromatos, molibdatos y wolframatos

Brilliant, gem-like, well-defined aquamarine-blue celestine crystals are disposed in aesthetic contrast on a matrix covered with snowy white colemanite crystals. A piece of exceptional aesthetics from a locality known for its borates, but from which few specimens of this type have been seen.

Size: 6.4 x 6.2 x 3 cm.
Main crystal: 7 mm.
210 €
RM3559   Celestine and colemanite
Sr(SO4)
  -  7. Sulfatos, cromatos, molibdatos y wolframatos

Brilliant, gem-like, well-defined aquamarine-blue celestine crystals are disposed in aesthetic contrast on a matrix covered with snowy white colemanite crystals. A piece of exceptional aesthetics from a locality known for its borates, but from which few specimens of this type have been seen.

Size: 5.9 x 3.8 x 3.4 cm.
Main crystal: 7 mm.
Reserved
RM3327   Hydroboracite

Excellent specimen of hydroboracite, with a very good size, formed by numerous radial aggregates of acicular crystals. Very good brilliance, transparence and with color zoning, between colorless to slightly honeyed. This specimen has a former owner's handwritten label. A display museum specimen.

Size: 11 x 6.9 x 4.6 cm.
Main crystal: 24 mm.
160 €
RM2985   Hydroboracite

Excellent specimen of hydroboracite, with a very good size, formed by numerous radial aggregates of acicular crystals. Very good brilliance, transparence and with color zoning, between colorless to slightly honeyed. This specimen has a former owner's label fixed to the back side. A display museum specimen.

Size: 8.8 x 6.7 x 4.3 cm.
Main crystal: 2.8 cm.
Sold