Staurolite

Crystals of staurolite sometimes form as twins in a unique 90 degree cross formation that is called .....

Crystals of staurolite rarely form as twins in a unique 90 degree cross formation that is called a ".....

Staurolite forms twins in a unique 90 degree cross formation that are called "fairy crosses." This o.....

Arroyo Hondo staurolites ("fairy crosses") are amongst the finest in the world, and this specimen is.....

Here is a near-perfect reddish-brown staurolite fairy cross is an unusually sharply formed crystal.&.....

When staurolite crystals form as 90 degree twins, they are called "fairy crosses".  This is a g.....

This is a fine specimen of staurolite with almandine garnet from the closed locality at Pearl Lake. .....

Here is a large, museum-sized specimen of staurolite with almandine garnet from the closed locality .....

Here's a very large, very sharp staurolite fairy cross in a dark red-brown color that contrasts nice.....

Staurolite crystals that form 90 degree twins are rare, and large ones even rarer. This choice speci.....

This twinned 90ẃ STAUROLITE crystal forms an exceptionally large and very choice FAIRY CROSS. For ye.....

This specimen demonstrates one of the special properties of staurolite: it can be found as twinned c.....

This specimen demonstrates one of the special properties of staurolite: it can be found as twinned c.....

Staurolite crystals that form 90º twins are rare, and large ones even rarer. This choice specimen fe.....

Twinned 90ẃ STAUROLITE crystals make exceptionally large and very choice FAIRY CROSSES. For years, s.....

This specimen demonstrates one of the special properties of staurolite: it can be found as twinned c.....

Here is a very large, very sharp staurolite fairy cross in a dark red-brown color that contrasts nic.....

This is an excellent example of a 60-120 degree staurolite twin, a formation that has been given the.....

Staurolite crystals form twins at both 90 degree angles and 60-120 degrees, and this is a superb spe.....

From a remote mountain in Russia come what are widely regarded as the finest staurolite crystals in .....