Semi-Black Opal and Diamond Conversion Ring of 14k & 10k Gold

L584 Semi-Black Crystal Opal and Old European Cut Diamond Halo Cluster Ring, Converted from c. 1900 Stickpin Head: Original Oval Cabochon Natural Opal, Likely Lightning Ridge (9.57 × 6.60 × 2.68 mm, est. approx. 1.0 ct), N6 Body Tone, Semi-Translucent, Bright Non-Directional Blue-Green Mosaic Flagstone Play-of-Color with Violet Accents, Within a Halo of Sixteen Old European Cut Diamonds (Raman-Confirmed at 1332 cm⁻¹), Head c. 1900 (c. 1895–1915) in approx. 14k Gold (XRF Prongs 13.3k, Low Zn), Later Ring Mount c. 1950–1990 Joined with Cd-Bearing Solder, 9ct/10k Gallery and Shank (XRF 9.6–10.5k, Zn 5–7.6%), 3.36 Grams

An elegant ring created from a stickpin (circa 1900), featuring a captivating semi-black crystal opal (likely Lightning Ridge) with bright non0directional blue/green mosaic flagstone play of color with violet accents surrounded by a halo of 16 old European cut diamonds. The face of the ring is mounted in 14k gold, while the ring gallery and shank are 10k gold.

The ring face measures approximately 0.55 inches by 0.45 inches and weighs 3.37 grams. The ring is currently a size 6 but can be professionally resized for an additional charge. It remains in great antique condition.

Gemstone identification has been confirmed using Raman spectroscopy, a non-destructive analytical technique that provides a precise chemical fingerprint to verify authenticity.

Metal authenticity has been professionally verified using XRF (X-ray fluorescence) analysis and traditional jeweler’s acid testing, confirming the 10k and 14K gold construction.