There are indications of sapphires and other forms of corundum.
The minerals of Siam include gold, silver, rubies, sapphires, tin, copper, iron, zinc and coal.
Under artificial illumination many sapphires appear dark and inky, whilst in some cases the blue changes to a violet, so that the sapphire seems to be transformed to an amethyst.
Some of the slightly cloudy Ceylon sapphires, usually of greyish-blue colour, display when cut with a convex face a chatoyant luminosity, sometimes forming a luminous star of six rays, whence they are called "star sapphires".
In 1875 sapphires were discovered in deposits of clay and sand in Battambang (Siam), where they have been worked on a considerable scale.
Sapphires are also found in Kashmir, where they occur, associated with tourmaline, in the Zanskar range, especially near the village of Soomjam.
In Montana, sapphires were discovered as far back as 1865, and have been worked on a large scale.
The Montana sapphires and the matrix have been described by Dr G.
(For figure of crystal of sapphire see Corundum and for artificial sapphire see GEM, § Artificial.) The so-called "Hope sapphires" of trade have been shown to be artificial blue spinets, coloured by cobalt.
Iron, copper, sapphires, &c., are said to be obtainable in the Himalaya.
The following precious stones are reported: corundum (rubies and sapphires), beryl, topaz, zircon, garnet, amazon-stone, tourmaline, often in large crystals, and variously coloured quartz, also often found in crystals of great size.
Blue eyes sparkled like sapphires in her round face, and a dimple danced at the corner of her generous mouth.
It contains 1300 great pearls, 400 garnets, 90 amethysts, 300 sapphires, 300 emeralds, 15 rubies, 75 balas rubies, 4 topazes, 2 cameos; the gems, except where they have been replaced, are cut en cabochon.
The larger plaques are richly ornamented with emeralds and sapphires, and the smaller plaques have each an enamelled figure of Our Lord, David, Solomon, and Hezekiah respectively.
It is a circlet of thick gold set with pearls, sapphires and other stones.
Sapphires are found in several gulches, especially on Yogo Creek, 16 m.
From Utica, Fergus county, where blue stones are found, and on Rock and Cottonwood creeks, where green, yellow, red and blue sapphires have been found.
Many of the sapphires are shipped to Switzerland for watch jewels and for bearings.
Rubies and sapphires are mined in the Chantabun district in the south-east.
Many of the Siamese sapphires are of very dark colour, some being so deeply tinted as to appear almost black by reflected light.
Madagascar yields sapphires generally of very deep colour, occurring as rolled crystals.
The great corundum deposits ofCorundumHill,Macon county,N.C.,have yielded good sapphires, and they are found also at Cowee Creek in the same county.
It was in the recess in the back wall of this hall that the famous Peacock Throne used to stand, "so called from its having the figures of two peacocks standing behind it, their tails being expanded and the whole so inlaid with sapphires, rubies, emeralds, pearls and other precious stones of appropriate colours as to represent life."
Similar attempts made by Pritchard with sapphires were more successful.
Queen Edith's crown was found to be only of silver-gilt, with counterfeit pearls, sapphires and other stones, FIG.
The chains to hang it by attached to the upper rim, while from the lower rim depend pearls, sapphires and a series of richly jewelled letters 2 in.