by Cognitive Allied Media Request early access

One piece, start to listed.

This is Viv's working view for one piece, a 1980s YSL pendant, rebuilt from the prototype. The object on the left picks up a price and a listing as you go.

Prototype output on a sample item. Names, sources and values are illustrative until validated for launch.

The YSL red enamel pendant necklace on blue velvet. The reverse of the pendant: a gunmetal hexagon engraved with radiating sunburst lines and the interlocked YSL monogram at the centre.
VIV-0098 YSL red enamel pendant

  1. Identify

    Viv reads your photos and researches the piece: who designed it, who made it, which era, and why collectors want it, with the sources she used.

    Identification

    Yves Saint Laurent (YSL), pendant necklace with braided leather cord

    Sample item
    Designer
    Yves Saint Laurent (YSL)
    Year / era
    1980s
    Product line
    Rive Gauche Bijoux
    Why this attribution

    The oversized hexagonal red enamel form with a faceted amber stone is typical of YSL's Rive Gauche bijoux of the 1980s, designed under Loulou de la Falaise and produced with the Parisian goldsmith Robert Goossens.

    Notable associations
    • Loulou de la Falaise Creative director of YSL bijoux in the 1970s and 1980s.
    • Yves Saint Laurent The interlocked monogram on the reverse and clasp plaque attributes the piece to the house.
    • Robert Goossens Goldsmith who produced many of the house's bijoux in this era.
    Sources Viv used
    • Sotheby's: YSL costume jewelry sale archive
    • Musée YSL Paris: Loulou de la Falaise and the bijoux ateliers
    • The Met: Yves Saint Laurent retrospective catalogue

  2. Assess

    Viv weighs the competing explanations against each other, ranks them, and says plainly where the evidence is thin.

    Authenticity

    Photo review. Probably authentic, moderate confidence.

    Sample item
    Probably authentic

    The photographed plaque, construction and materials are most consistent with a genuine YSL house piece, probably mid-1980s Rive Gauche production. An exact archival design match has not yet been located.

    assessed from photographs

    Moderate confidence
    Photos reviewed
    • Front of the pendant: red enamel hexagon with an amber oval stone in a gunmetal frame.Front
    • Reverse of the pendant with the sunburst engraving and YSL monogram.Reverse, YSL monogram
    • The hook clasp and the pierced YSL logo plaque on the cord.Clasp plaque
    Which explanation fits best
    • Genuine as attributed
    • Genuine, later or other variant
    • Genuine base, materially altered
    • Period piece, transferred attribution
    • Reproduction or counterfeit
    Evidence sufficiency
    Maker and product familyAdequate for a probable judgment
    Exact line, date and archival matchInsufficient: no dated catalog match located

    Viv: I could not find a dated catalogue match for this exact design. A sharper photo of the clasp plaque, front and back, would let me narrow the date.

  3. Price

    Viv finds comparable listings, explains the range in plain words, and leaves the asking price to you. Try the slider.

    Pricing

    Valuation $385-460

    Sample item
    $425
    Suggested, from
    3 comparable listings
    Why Viv suggested this price
    1. Three comparable listings are asking between $310 and $425.
    2. The $310 listing has chipped enamel. It sets a condition-adjusted floor, and this piece's enamel is intact.
    3. Both monogram plaques and the Rive Gauche line support the upper half of the range.
    Set your price
    $385
    $640
    Valuation $385-460 Suggested $425 With stronger authenticity signals $520-640
    Inside the valuation
    Your pricing note (private, for your records)

    both plaques crisp, hold at $435

    Comparable listings
    1.AskingeBay, May 2026$425YSL hexagonal enamel pendant, red, Rive Gauche
    2.AskingVestiaire Collective, March 2026$390YSL Rive Gauche leather cord necklace
    3.AskingeBay, June 2026$310YSL enamel pendant, chipped (sets the floor)

  4. List

    Viv drafts the listing from the research she just did: a title, the copy, and styling suggestions. All of it is yours to edit.

    Marketing

    1 listing draft

    Sample item
    Hexagonal Red Enamel & Amber Crystal Pendant NecklaceYves Saint Laurent (YSL), 1980s, Jewelry
    $435
    Listing copy

    Step into the bold glamour of 1980s Paris with this Yves Saint Laurent Rive Gauche pendant. A dramatic hexagon of vivid red enamel, centered with a faceted amber crystal, hangs from a thick braided leather cord. Twin YSL monograms on the reverse and clasp plaque mark it as a piece of the house's maximalist bijoux era. Very good vintage condition with light, honest patina on the leather.

    Styling suggestions
    • Layer over a black turtleneck for a classic Rive Gauche silhouette
    • Pair with amber-toned earrings to echo the crystal center
Request early access Back to the overview