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An ear-ring is an ear ornament, worn suspended from a bent wire or thin hoop passed through a hole pierced in the lobe of the ear or in later years clipped or screwed onto the lobe (called an ear-clip or ear-screw).

Ear-rings worn from earliest times, have been made of gold, silver, platinum, silver gilt etc. and in a great variety of shapes, styles and sizes, and with various ornamentations and pendants made of a variety of materials, e.g. gold, coral, jade, jet, glass etc.

During the Renaissance period, the style of shorter hair led to a revival of the wearing of earrings, not only by women, but also by men in Spain and Britain. Sometimes only one earring was worn but the decoration was more elaborate and often included pendant pearls. Thereafter earrings have continued to be worn, often set with gemstones, the styles reflecting the prevalent styles of the times.

Pottery body that requires glazing to make it non-porous

Ebony is a hard, dark, dense wood sometimes used in jewellery

Eilat Stone is the name for a green-blue inhomogeneous mixture of several secondary copper minerals including malachite, azurite, turquoise, pseudomalachite, chrysocolla and others.

The hardness of this copper-based stone varies.

There are many variations on its spelling, including Eliat, Elat, and Ellat.

The Eilat stone is the National stone of Israel, and is also known as the King Solomon Stone, Eilat stone is only found in King Solomon's copper mines on the Red Sea, near Eilat, Israel.

The blue and green stones sold in tourist souvenir shops are generally imported from foreign copper mines, and are not really from Israel, which is of little importance to the tourists but has to be considered by serious mineral collectors.

Electrum is an amber-coloured alloy of gold and silver that was used in ancient times.

Electrum is also an alloy used in medieval times consisting of copper 50%, nickel 30% and zinc 20%

Embossing is a method of surface decoration in which a design is raised slightly above the surface.

Sheets of metal, leather, and plastic can be embossed.

Emeralds are a very hard, green precious stone (beryl, Be3Al2Si6O18, coloured by chromium and some vanadium impurities).

Emeralds belong the beryl group of stones which also includes aquamarines, morganite, and chrysoberyl). Emerald (and all forms of beryl) have large, perfect, six-sided crystals.

Flaws and cloudiness (called jardin) are very common in emeralds, so many emeralds are oiled, irradiatied,and dyed to improve their look.

Synthetic emeralds, developed by Carroll Chatham in the 1930's, have fewer imperfections and are very hard to distinguish from natural emeralds.

Emeralds were long thought to have healing powers, especially for eyesight. During the renaissance, emeralds were used as a test for friendship among the aristocracy; an emerald given to a friend would remain perfect as long as the friendship endured.

Emeralds have a hardness of 7-8 and a specific gravity of 2.6 – 2.8.

Enamel is a glassy substance (powdered glass with colourants) fused onto metal using heat. It is a powdered glass mixed with a flux to aid the melting process, and metallic oxide pigmented to give colour.

It can be applied with a brush, like paint, or set into metal depressions, grooves, or compartments in either paste or powder form and fused or re-vitrified to the base metal in a small kiln.

Enamels have been used to decorate metals especially gold, silver and copper based alloys from very early times.

Engraving is a method of surface decoration in which a design of fine lines is etched or cut into the metal surface using a sharp tool. Metal is actually removed.

Also any print made from a steel or copper plate

The term for a centre piece for a dining table consisting of a stand holding a single central dish and several similar dishes to display and serve sweetmeats and fruit. Made from silver, Sheffield Plate and sometimes glass