spinels

His earliest scientific work is related to spinels and other minerals.

However, the finest red spinels can have a value approaching that of the average ruby.

Her robe was scarlet, and spinels burned in her hair.

The mace is encrusted with spinels and diamonds, from end to end.

The transparent red spinels were called spinel-rubies or balas rubies.

He wouldn't pay good money because it was set with spinels instead of rubies, so the man took it back.'

Chromite sand is a solid solution of spinels.

A major group within this class are the spinels, with a general formula of XYO.

In the circlet are precious stones such as spinels, zircons, and pearls.

Rubies would rub against her, and spinels would spin in dizzy circles.

Müller said slowly, 'It would be spinels.

Cuprospinel, like many other spinels has the general formula ABO.

In the past, before the arrival of modern science, spinels and rubies were equally known as rubies.

Minor minerals include chromium and aluminium spinels and garnets.

Many spinels are also isomorphous.

The Badakshan Province was for centuries the main source for red and pink spinels.

Red spinels, red garnets, and colored glass have been falsely claimed to be rubies.

They were spinels.

Other crystalline phases may be olivine, Fe-rich pyroxene, spinels and feldspars.

From certain indications I judged these stones, which might have been spinels or carbuncles, or even rubies, to be very ancient.

Filigree goldwork, seven red spinels.

Magnesioferrite is a magnesium iron oxide mineral, a member of the magnetite series of spinels.

The two largest spinels are approximately 83 cts., and the largest pearl is approximately 22 mm.

Twenty-five years after the war ended a man had gone in to the shop and been told that his treasure was studded with spinels instead of rubies.

Wadsleyite is a spinelloid, and the structure is based on a distorted cubic-closest packing of oxygen atoms as are the spinels.