- A
- Akoya pearl
- A cultured saltwater pearl from the Pinctada fucata oyster, grown mainly in Japan and China. Akoya pearls are typically 6 to 9 mm, very round and prized for their high lustre.Jewellery
- Asscher cut
- A square step cut with cropped corners and deep, concentric facets that create a hall-of-mirrors effect. It was developed in Amsterdam in the early twentieth century.Jewellery
- Atelier
- A workshop or studio where garments, jewellery or other objects are designed and made by hand. The French word is used widely in fashion and fine jewellery.People & Brands
- Automatic movement
- A mechanical movement wound by a rotor that turns with the motion of the wrist. The self-winding principle dates back to the eighteenth century.Watches
- B
- Baroque pearl
- A pearl with an irregular, non-spherical shape. No two are alike, and their uneven surfaces often show especially lively lustre.Jewellery
- Bench
- The goldsmith's workbench, with a wooden bench peg at the front and a leather apron beneath to catch filings. Working at the bench means making pieces by hand.People & Brands
- Bespoke
- Made from a first, individual pattern to one client's measurements and wishes, with several fittings along the way. The term is most closely linked with tailoring.People & Brands
- Bezel setting
- A setting in which a thin rim of metal encircles the stone and holds it securely. It is smooth to the touch, protective and well suited to active hands.Jewellery
- Bias cut
- Fabric cut diagonally across the grain so that it drapes and follows the body softly. The technique is closely associated with fluid evening dresses of the 1930s.Fashion
- Bouclé
- A yarn, or a fabric woven from it, with small loops on the surface that give a nubbly, textured hand. The name comes from the French for curled.Fashion
- Box calf
- Calfskin with a smooth, dense surface finished to a soft gloss. It holds its shape well and is favoured for structured handbags and fine shoes.Accessories
- Brilliant cut
- A faceting style designed to return as much light and sparkle as possible. The round brilliant usually has 57 or 58 facets, and its modern proportions date back to 1919.Jewellery
- C
- Cabochon
- A gemstone shaped with a smooth, domed top and no facets. The cut suits opaque and translucent stones such as turquoise, opal and moonstone.Jewellery
- Carat, gold
- A measure of gold purity in parts of 24. Pure gold is 24 carat, while 18 carat gold contains 75 per cent gold and is stamped 750.Jewellery
- Carat, weight
- The unit of weight for gemstones. One carat equals 0.2 grams and is divided into 100 points.Jewellery
- Cashmere
- The fine, soft undercoat of cashmere goats, combed or gathered in spring, mainly in Inner Mongolia and Mongolia. Its fibres typically measure around 14 to 19 microns.Fashion
- Cathedral veil
- One of the longest classic bridal veils, trailing well beyond the hem of the dress along the floor. It suits formal ceremonies and grand spaces.Bridal
- Charmeuse
- A lightweight satin-weave fabric, traditionally silk, with a lustrous face and a matte back. It drapes fluidly and is a favourite for slip dresses and blouses.Fashion
- Chronograph
- A watch with a stopwatch function, started, stopped and reset with pushers on the side of the case. Many chronographs carry a tachymeter scale for measuring speed.Watches
- Chronometer
- A watch whose precision has been tested and certified by an official body over several days, in different positions and at different temperatures.Watches
- Claw setting
- A setting in which small metal claws, usually four or six, grip the stone and raise it above the band. It allows light to reach the stone from many angles.Jewellery
- Collier
- From the French word for necklace, a term for an elaborate necklace, often one that lies close around the base of the neck.Jewellery
- Complication
- Any function of a watch beyond the display of hours, minutes and seconds, such as a date, a moonphase or a chronograph.Watches
- Corozo
- A hard, ivory-coloured material from the dried nut of the tagua palm, used for fine buttons. It takes dye well and shows a subtle natural grain.Fashion
- Corundum
- The mineral of ruby and sapphire, ranking 9 on the Mohs scale. Red corundum is called ruby, and every other colour is called sapphire.Jewellery
- Court profile
- A wedding band shape rounded on both the outside and the inside, often called a comfort fit. It slides easily over the knuckle and sits gently on the finger.Bridal
- Crepe de chine
- A light silk fabric with a softly crinkled, matte surface created by tightly twisted yarns. It drapes gracefully and is widely used for blouses and linings.Fashion
- Cultured pearl
- A pearl that forms after a nucleus or a small piece of tissue is placed inside an oyster or mussel by hand. Almost all pearls sold today are cultured.Jewellery
- Cupro
- A regenerated cellulose fibre made from cotton linter, the short fibres that cling to cotton seeds. It is smooth, breathable and a classic choice for linings.Fashion
- E
- Escapement
- The mechanism that releases the energy of the mainspring in small, regular steps and keeps the balance wheel oscillating. It produces the familiar tick of a mechanical watch.Watches
- Eternity ring
- A band set with a continuous line of matching stones, either all the way round or across the front. It is often given to mark an anniversary or the birth of a child.Bridal
- F
- Filigree
- Delicate openwork made from fine, often twisted wires soldered together into lace-like patterns.Jewellery
- Floating canvas
- A layer of canvas, traditionally containing horsehair, stitched rather than fused inside the front of a tailored jacket. It moulds to the body over time and lets the cloth move naturally.Fashion
- French seam
- A seam in which the raw edges are enclosed by a second line of stitching, leaving a clean finish on both sides. It suits fine and sheer fabrics.Fashion
- Full-grain leather
- Leather that keeps the complete top layer of the hide with its natural grain intact. It is the strongest grade and develops a rich patina over the years.Accessories
- G
- GMT
- A complication that shows a second time zone, usually with an extra hand that circles the dial once every 24 hours. The name refers to Greenwich Mean Time.Watches
- H
- Hallmark
- An official mark struck on precious metal to guarantee its fineness, applied in some countries by an independent assay office. The word comes from Goldsmiths' Hall in London.Jewellery
- Halo setting
- A setting in which a ring of small stones surrounds a centre stone, adding brilliance and making it appear larger. A hidden halo sits beneath the centre stone instead.Bridal
- Haute couture
- A protected designation in France for made-to-measure fashion from houses that meet strict criteria, overseen by the Paris federation of couture and fashion. The garments are made largely by hand.Fashion
- L
- Lost-wax casting
- An ancient method in which a wax model is encased in heat-resistant investment, melted out in a kiln and replaced with molten metal. It reproduces fine detail faithfully.Jewellery
- Lustre
- The way light reflects from the surface of a pearl or gemstone. In pearls, high lustre means sharp, bright reflections and a deep inner glow.Jewellery
- M
- Made to order
- Produced only once it has been ordered, usually from an existing design with a choice of size, material or finish.People & Brands
- Mainspring
- The coiled spring that stores energy in a mechanical watch. As it slowly unwinds, it drives the gear train and the escapement.Watches
- Mantilla
- A Spanish lace veil or scarf worn over the head and shoulders, often held by a tall comb. It frames the face softly and is traditional at Spanish weddings.Bridal
- Merino
- Fine wool from merino sheep, raised especially in Australia and New Zealand. It regulates temperature, resists odour and is soft enough to wear next to the skin.Fashion
- Milgrain
- A border of tiny metal beads along the edge of a band or setting, giving a soft, vintage texture.Jewellery
- Mohs scale
- A scale from 1 to 10 that ranks minerals by their resistance to scratching. Diamond stands at 10, corundum at 9 and emerald at 7.5 to 8.Jewellery
- Momme
- A Japanese unit used to express the weight of silk fabric. A higher momme number indicates a denser, heavier and usually more durable silk.Fashion
- Moonphase
- A complication that shows the phases of the moon through a small aperture in the dial, following the synodic month of about 29.5 days.Watches
- N
- Nacre
- The iridescent substance, built from fine layers of aragonite, that molluscs secrete to form pearls and line their shells. Thick, even nacre gives a pearl its lustre and durability.Jewellery
- P
- Parure
- A matching set of jewellery, traditionally a necklace, earrings, a bracelet and a brooch. A smaller set is called a demi-parure.Jewellery
- Pavé
- A setting in which many small stones sit closely together, held by tiny beads of metal, so that the surface appears paved with light.Jewellery
- Perpetual calendar
- A complication that accounts for months of different lengths and for leap years. It typically needs no correction until 2100, which is not a leap year.Watches
- Polarised lens
- A sunglass lens with a filter that blocks horizontally reflected light, reducing glare from water, snow and roads.Accessories
- Power reserve
- The length of time a fully wound mechanical watch runs before it stops. Many modern movements offer around 40 to 80 hours.Watches
- Q
- Quartz movement
- A battery-powered movement in which a quartz crystal oscillates 32,768 times per second. It is typically accurate to within a few seconds per month.Watches
- R
- Ready-to-wear
- Clothing made in standard sizes and sold finished, rather than made to individual measurements. The French term prêt-à-porter means the same.Fashion
- Rhodium plating
- A thin layer of rhodium, a bright white metal of the platinum group, applied to white gold for a brighter finish. It wears gradually and can be renewed by a jeweller.Jewellery
- S
- Saddle stitch
- A hand stitch sewn with two needles passing through the same holes from opposite sides. If one thread breaks, the other still holds the seam.Accessories
- Saffiano
- Leather pressed with a fine cross-hatched pattern and finished with a protective coating, which makes it durable and resistant to scratches.Accessories
- Selvedge
- The tightly woven, self-finished edge running along both sides of a length of fabric, which keeps it from fraying.Fashion
- Shaped band
- A wedding band curved or notched to sit flush against an engagement ring whose setting would otherwise leave a gap. It is also called a contoured or fitted band.Bridal
- Solitaire
- A ring set with a single stone, most often a diamond. The six-claw solitaire became a classic engagement ring design in the late nineteenth century.Bridal
- Step cut
- A cut with long, rectangular facets arranged in parallel rows like steps. Emerald, Asscher and baguette cuts are step cuts, valued for the way they show clarity.Jewellery
- Sweetheart neckline
- A neckline shaped like the top of a heart, curving over the bust and dipping at the centre. It is a favourite for wedding gowns and evening dresses.Bridal
- T
- Toile
- A trial version of a garment, usually made in inexpensive cotton calico, used to test the pattern and fit before the final fabric is cut.Fashion
- Tourbillon
- A rotating cage that carries the escapement and balance wheel, designed to average out the effect of gravity on accuracy. Abraham-Louis Breguet patented it in 1801.Watches
- Trunk show
- A short event at which a designer or maker presents a collection directly to clients, often in a boutique or private setting, and takes orders.People & Brands
- V
- Vegetable tanning
- A traditional tanning method using tannins from plants, such as bark and wood. Vegetable-tanned leather is firm at first and develops a rich patina over time.Accessories
- Vermeil
- Sterling silver coated with a layer of gold, also known as silver gilt.Jewellery
- Vicuna
- The rarest of the fine animal fibres, from the vicuna, a wild relative of the llama protected in the Andes. Its fibre is exceptionally fine, light and warm.Fashion
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