estateRUTH.

Identification

RA Signed Silver-Tone Spiky 'Sea Urchin' Black Rhinestone Stretch Cocktail Ring

Photo reference

4 uploaded photos

Overview

Identified as a contemporary costume jewelry stretch ring. The reverse features a clear 'RA' maker's mark in a circular cartouche.

Story

The 'RA' mark on base metal stretch rings from the 1990s-2000s is frequently misattributed by online sellers to Robert Allison, a Scottish silversmith known for fine sterling Celtic designs. In reality, this mark belongs to a contemporary mass-market or department store costume jewelry brand, often cited by collectors as Roberta Allen or a sub-line of Roman Company. The secondary market for late 20th-century mall-tier costume jewelry is saturated but active, driven by casual buyers looking for affordable, fun statement pieces.

Maker / Origin

RA

Condition & Value

The silver-tone base metal shows visible plating wear on the reverse, which is typical for costume rings of this age and construction. The stretch mechanism appears intact based on the standard configuration.

Full Research

See what it's actually worth.

Sold comps, value drivers, and venue guidance pulled from recent auction results.

Market Analysis

The secondary market for late 20th-century mall-tier costume jewelry is saturated but active, driven by casual buyers looking for affordable, fun statement pieces. Stretch rings are particularly common and easy to sell because they do not require precise sizing, appealing to a broad audience. However, because supply vastly outstrips demand, prices remain firmly in the $10-$30 range. Buyers for this tier are typically found on high-volume platforms like eBay, Poshmark, and Etsy rather than traditional auction houses.

Value Drivers

▲ Clear 'RA' maker's mark appeals to collectors of signed costume jewelry.

▲ Bold, chunky 'sea urchin' statement design aligns well with current Y2K revival fashion trends.

▲ Stretch band construction makes it accessible to a wider range of buyers without sizing concerns.

Concerns

▼ Unverified stone count — missing rhinestones on the spike tips would drop the piece to the bottom of the range.

▼ Visible plating wear on the reverse confirms base metal construction and limits upside potential.

▼ Market saturation of similar 1990s-2000s costume rings keeps the overall price ceiling low.

Best Venue

List on a high-traffic, casual resale platform like eBay or Poshmark with a Buy-It-Now price around $20-$25. Utilize trend-focused keywords like 'Y2K', 'Chunky Statement', 'Goth', and 'Sea Urchin' to attract buyers looking for specific aesthetics. Do not invest in professional cleaning or repair, as the intrinsic value does not support the cost.

Upside Potential

If the attached tag confirms this piece is 'New Old Stock' (NOS) with original retail branding, it could push the value toward the $30 high end by appealing to collectors of pristine vintage costume jewelry.

▾

Also found — market-range context

Related comps outside the valuation band· 5 comps

Surfaced during research but not used to anchor the valuation — wrong form, species, era, or no published price. Shown so the market range around this item is visible.

  • Poshmark
    RA Ring White Stone Clear Rhinestones Gold Metal Filigree Stretch Band Statement
    Link could not be verified.
    $33
  • Etsy
    Vintage Rhinestone Black Enamel Flower Ring, Size 8
    No maker specified; cannot confirm it is by RA/Robert Allison.
    $28
  • Poshmark
    Vintage Y2K Statement Stretchy Ring Signed RA Orange and Yellow Cabchons Red Rhi
    Link could not be verified.
    $17
  • Poshmark
    Vintage Robert Allison Silver Black Enamel Rhinestone Large Flower Ring Size 7
    Sale on record but hammer price not published.
    No price
  • eBay
    RA Signed Stretch Ring Silver Tone Square Beads Black Cross Top Religious Unisex
    Sale on record but hammer price not published.
    No price