On exposure to heat, amethyst generally becomes yellow, and much of the cairngorm or yellow quartz of jewellery is said to be merely "burnt amethyst."
Many other badges and various articles of jewellery have since been designed, with this flower as an emblem.
Great quantities of jewellery were found in the tombs, the gold work said to resemble the Etruscan.
The chief articles of manufacture are machinery, woollen and cotton goods, silk ribbons, paper, tobacco, leather, china, glass, clocks, jewellery and chemicals.
The burial was richly furnished with barbaric jewellery, a gold comb, a bow-case and some vases decorated with Graeco-Scythian reliefs.
The typical objects from South Russia were jewellery, pottery, terra-cottas, and glass, mostly of florid Greek style.
These properties are most highly developed in the substance known as jet, which is a variety of cannel found in the lower oolitic strata of Yorkshire, and is almost entirely used for ornamental purposes, the whole quantity produced near Whitby, together with a further supply from Spain, being manufactured into articles of jewellery at that town.
The author of these receipts is not under any delusion that he is transmuting metals; the MS. is merely a workshop manual in which are described processes in daily use for preparing metals for false jewellery, but it argues considerable knowledge of methods of making alloys and colouring metals.
The contents of the tombs have been nearly destroyed by successive plunderers; enough remained to show that rich jewellery was placed on the mummies, a profusion of vases of hard and valuable stones from the royal table service stood about the body, the store-rooms were filled with great jars of wine, perfumed ointment and other supplies, and tablets of ivory and of ebony were engraved with a record of the yearly annals of the reigns.
The product is extensively used for the production of cheap jewellery and articles for smoking.
No remarkable specimens of the metallurgic art of an early period have been found, apart perhaps from the silver vase of Entemena, but at a later epoch great excellence was attained in the manufacture of such jewellery as ear-rings and bracelets of gold.
This consisted of bronze swords and vases, gold jewellery with agate and other gems, bracelets, collars, a seal cylinder and two engraved gold rings, one of which, the largest known, bears a religious scene.
And not only in bronze, but in Paris jewellery, enamels, silver, pewter and iron work a cultured refinement is apparent, beside which other productions, even the most finished, appear crude.
From Honduras to Panama the urn burials, the pottery, the rude carved images and, above all, the grotesque jewellery, absorb the archaeologist's attention.
A profusion of jewellery is worn of the most solid description, none hollow; silver is worn only by the very poor, coral only by negresses.
All this while, the minor arts of enamelling, miniature, glass-painting, goldsmith's work, jewellery, engraving, tapestry, wood-carving, pottery, &c., were cultivated with a spontaneity and freedom which proved that France, in the middle point between Flanders and Italy, was able to use both influences without a sacrifice of native taste.