Welcome to RocknCrystals
BICOLOUR TOURMALINE

$195

BICOLOUR TOURMALINE
BICOLOUR TOURMALINE
BICOLOUR TOURMALINE
BICOLOUR TOURMALINE
BICOLOUR TOURMALINE
BICOLOUR TOURMALINE

BICOLOUR TOURMALINE

$195

BICOLOUR TOURMALINE

Beautiful Bicolour Tourmaline Crystal.  Some would call this specimen a Water Melon Tourmaline.

 

Dimensions:
3.2cm x 1cm x 1cm, 6.5g or 34ct.

Location:
Himalaya Mine, Pala, California, USA.

Tourmaline:

Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH).

In stock

BICOLOUR TOURMALINEBICOLOUR TOURMALINE

Beautiful Bicolour Tourmaline Crystal.  Some would call this specimen a Water Melon Tourmaline.

 

Dimensions:
3.2cm x 1cm x 1cm, 6.5g or 34ct.

Location:
Himalaya Mine, Pala, California, USA.

Tourmaline:

Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH).

The Tourmaline Group has a general formula of AX3Y6(BO3)3 Si6O18(O, OH, F)4.  The A can be either calcium or sodium.  The X can be either aluminum, iron, lithium or magnesium.  The Y is usually aluminum, but can also be chromium or iron.  Some potassium can be in the A position, some manganese can be in the X position and some vanadium can be found in the Y position, but these elements are usually not represented in the formulas of the tourmaline members.

Additional information

Weight 7 g
Dimensions 4 × 1 × 1 cm