Fluted

Fluted - A surface ornamented by channels or grooves
Foldover clasp - A type of clasp in which a hinged part opens, fits through a ring and snaps closed to hold the ring in place ...

Fluted: A long, usually rounded groove incised as a decorative motif. Commonly seen on Greek and Roman columns.
Fob: A short chain or ribbon attached to a pocket watch, often with an ornament or decorative seal attached to the end.

Fluted: A long, usually rounded concave grooves repeated in vertical parallel lines as a decorative motif. Commonly seen on Greek and Roman columns.

Fluted - This design motif features rounded grooves in the surface of the piece.
Fold-Over Clasp - A type of hinged clasp used on necklaces and bracelets.
Fool's Gold - See pyrite.

fluted
A fluted design features rounded grooves on its surface and usually flares out from a smaller end to a larger shape.
fold-over clasp ...

Interlocking Bit Fluted 3ct Garnet and Diamond Ring in 14k White Gold
Retail Price
Our Price
Sale Price ...

The clear rock crystal egg rests on a fluted quatrefoil base that is colorfully enamelled in a Renaissance-inspired design of translucent green, red, and blue arabesques between bands of opaque white enamel dotted with red enamel.

Rolex Datejust 'Thunderbird' (model 1625) : The Datejust models were introduced with a coin edge bezel, which later were replaced by a new fluted bezel along with a larger crown.

Refers to a series of fluted lines or vertical ridges that encircle the perimeter of some United States coins. (Dime, quarter, and half dollar for example)
Refraction
Bending of light as it passes from air into a different medium.

Popular motives were rosettes, festoons, half fluted pillars, vases, urns, ribbon bows, hearts, portraits and snakes (ouroboros).

Tap: A hard steel screw with fluted, hollow cutting edges to cut threads in a pre-formed hole.

See also: Gold, Jewel, Cut, Stone, Diamond