Tempera: A paint medium made by mixing colour pigments with egg, much used until the development of oil paint.

Terracotta: A mixture of fine clay and fine-grained white sand with crushed pottery first slowly air-dried and then baked in a kiln to the hardness of stone; much used in statues, figures, etc.

Tint: Term for a colour lightened with white. Also, in a mixture of colours, the tint is the dominant colour.

Traction: In oils, the movement of one paint layer over another.

Triptych: A painting, usually an altarpiece, consisting of three hinged parts, the outer two folding over the middle section.

Tondo: A circular painting or sculpture, from the Italian word for ‘round’.

Torso: The trunk of a statue deprived of head and limbs.

Tahitian Pearl: Dark colored pearls grown in black-lipped oysters.  Because of their rarity in nature, most Tahitian pearls are now cultured.

Tanzanite: A fairly new gemstone discovered in Tanzania in 1967.  Tanzanite is known for its bluish-purple hues and is December's newest birthstone as well as the traditional gift for the 24th wedding anniversary.

Teardrop-Shaped: Also known as pear-shaped, a teardrop-shaped stone features a rounded bottom edge that comes to a point at the top.

Tension Setting: A stone is held on either side by the metal setting, as if it was floating in the air. Unlike other settings, the tension setting exposes almost the entire stone.

Three-Piece Set: A three-piece (or trio) set is a bridal set (engagement ring and her wedding band) with a matching wedding band for him.

Toggle Clasp
A metal bar on one end of the chain fits through a small metal ring on the opposite end.  When flat, the bar cannot fit back through the ring, securing the ends together.

Tongue Clasp: This clasp has a V-shaped piece of metal that securely fits into a box on the opposite end of the chain.

Toughness: The ability of a stone to resist pressure from impact.

Tourmaline: Tourmaline occurs in more colors or combination of colors than any other gemstone.  It is heat resistant, extremely durable and the traditional gift for the 8th wedding anniversary.

Triangle-Shaped: A type of cut in which the stone has three distinct sides.

Tikka: A piece of bridal jewellery usually worn on the head, with a pendant hanging on the forehead. Also known as tikka or maangtika.

Tiffany Setting: Normally a rounded 6 pronged setting with thin prongs which flare out from the base. Introduced by Tiffany and Co. in 1886. Often used for large diamond solitaires today.

Topaz: A semiprecious gemstone that can be found in the colors blue, brown, yellow and pink. Other colors of topaz can be created through enhancements like heat treatment.

Tourmaline: A semiprecious gemstone that is available in a wide range of colors and that can appear to have more than one color in itself.

Tanzanite’s: Tanzanite is an extraordinary gemstone. It occurs in only one place worldwide. Its blue, surrounded by a fine hint of purple, is a wonderful color

Turquoise: A semiprecious gemstone of bluish-green color that is made of a copper and aluminum compound with high water content. Turquoise is named after Turkey, where it was thought to have been discovered.