Screw back

SCREW BACK:
A highly secure earring fastening similar to a standard post but the back or "nut" actually screws onto the post. Many diamond stud earrings use this secure fastener.
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Screw Back
Screw Back is a type of clip on earring that does not require a piercing; instead it is attached to the ear by screwing a piece at the back until the earring fits tightly against the ear.

Screw back - A vice-like clamp that holds a non-pierced earring in place with a screw that can be tightened against the earlobe ...

Screw back: A type of earring attachment for non-pierced ears where the earring is tightened against the earlobe by means of a screw with a flat padded end.

Screw back: an ear nut or clutch that screws onto a threaded post. Also known as a threaded post and nut or screw post and nut. Usually solitaire earrings and studs have this.

Screw back - the backing to an earring which is held tightly against the ear lobe by means of a screw with a flat rounded end. This type of earring back was introduced in 1894.

Screw Back Ear Clip: An ear clip with a threaded screw that tightens an earring against a non-pierced earlobe for tension adjustment.

Screw Back - If a post of an earring is grooved and the back is applied by screwing it onto the post it is called a screw back.

Screw back earring finding for unpierced ears patented
Cross & Bevean, UK, issued patent for cellulose acetate
1895
American Consuelo Vanderbilt marries the British Duke of Marlborough ...

Screw back, a type of fastener, consists of a nut or clutch that actually screws onto a threaded post for tightening an earring against a non-pierced earlobe through tension adjustment.
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Screw Back is an ear nut that screws onto a threaded earring post; usually used with diamond stud earrings.
Seed Crystal
A small piece of single crystal mineral from which a large crystal is to be grown.

Screw Back
Screw backs are typically used for diamond earrings. This secure backing features small metal backs that screw onto the post.

RELATED TERMS: See Hinged, Lever Back, Omega Back, Screw Back, Friction Post. Earring Design:Popular design patterns utilized by earring manufacturers. RELATED TERMS: See Chandelier, Dangle, Hoop, J-Hoop, Jacket, and Stud Earrings.

Earring: A form of ornament worn suspended from the ear, either by pierced wire, screw back or clip.

Clip-on styles vary from screw backs, spring loaded clips, or magnetic earrings. The most popular is the spring loaded tension back that grips the ear lobe and holds the earring in place. Clip-ons were popular with costume jewelry.

(i.e., products that are less than 500 parts per thousand platinum): pin tongues, joints, catches, lapel button backs and the posts to which they are attached, scarf-pin stems, hat pin sockets, shirt-stud backs, vest-button backs, and ear-screw backs, ...

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