A Graduated Opal Doublet and Diamond Necklace, 17.5

knotted, double strand pearls approx. 7.5 to 8mm each, clasp with 25 old European cut diamond and single cut diamonds estimated total weight 0.85ct., round opal doublet, mounting tested platinum, clas

A LATE 19TH / EARLY 20TH CENTURY BLACK OPAL AND DIAMOND NECKLACE graduated oval black opals suspended from diamond-set knife-edge bars to black opal and diamond swag links, to a diamond-set double bar

comprising one triple strand necklace with a diamond and opal clasp, the graduated pearls ranging from 2.5 to 7.0 mm in diameter, the 14 old European cut diamonds [I-J/VS2-SI1] weighing approximately

OPAL AND DIAMOND FRINGE NECKLACE, CIRCA 1900, AND EARRINGS, 1st: The necklace suspending a graduated fringe of opal cabochons via brilliant-cut diamonds, on a cable-link chain, 2nd: Each earring set w

Opal Bead, Diamond, 18k Yellow Gold Necklace. Featuring opal beads ranging in size from approximately 7.5 mm to 4.7 mm, completed by a diamond, 18k yellow gold bean shaped clasp, forming a graduated 1

A Yellow Gold, Diamond, Rock Crystal and Graduated Opal Bead Necklace, containing 59 opal beads measuring approximately 4.09-11.30 mm in diameter alternating with 56 faceted rock crystal rondelle bead

Triple-strand graduated pearl necklace with 14k yellow gold, diamond and opal clasp, two hundred fifty-six (256) lustrous white pearls, approximately 3.5 to 7.5mm, 19" L. Provenance: Beverly, Massachu

including amethyst and diamond ring, two onyx pendants, two diamond pearl enhancers and two pairs of earrings, both for pierced ears together with an 18k gold necklace set with an opal doublet, 24 dwt

14k yellow gold freeform pendant containing one freeform boulder opal, one oval cabochon doublet, four gemstones of various cuts and colors and one round brilliant cut diamond weighing approximately 0

This stunning natural opal necklace is marked OROI Italy and has a 14K rope chain. The pendant is a natural opal cabochon (not a doublet or triplet) set in white gold with a diamond encrusted bale. Ch

22K yellow gold necklace by Gurhan Orhan, Turkey, featuring large round textured disc pendant with variously shaped bezel set Australian opals, width of pendant 1.5 in. W, custom chain set with 90 dia

A Graduated Diamond NecklaceSet with 186 round brilliant-cut diamonds weighing 9.99 carats in, 18K gold16.9 grams gross18" L

Opal weighs6.54 cts. Total diamond weight 2.46 cts. GGA papers included. 18" long.

Estate 18kt yellow gold multi-strand tumbled golden opal and diamond necklace, numerous diamonds, approx 0.38cttw, average color: H-I, average clarity: SI1-SI2, hallmarked 14KT 750, approx 17.5"l, 130

18k Gold w/ Large Opal & Diamond Necklace, marked 750, approx 15.7g total weight -

14K Yellow Gold Necklace, having a central fan shaped pendant set with (14) round faceted diamonds and (2) baguette shape diamonds, on a gold mesh chain marked "14K", pendant: 1 1/4" x 1 3/8", chain:

14K yellow gold opal and diamond necklace. The 11 carat, abstract opal is presented by brightly polished gold faceted figures, each finished with a band of bezel set diamonds ( 0.18 cttw.) clasping th

14KT yellow gold necklace with a large (2/3" x 1/2") opal accented with 4 round diamonds in a 14K bezel. Weighs 16.2 dwt.

18K and 14K white gold Australian opal and diamond pendant necklace, pendant with one 16.65ct. oval-cut 25 x 21mm Australian opal accented with six round brilliant-cut diamonds approx: 0.12 ct tw., co

An Opal Doublet Diamond 18K Gold Ball Ring he oval opal doublet centers the spherical frame, measuring approximately 18.3 x 15.0mm, accented by curving rows of ninety-tworound brilliant cut diamonds,

18K Opal Diamond Necklace, 8.1g. Marked 750. Receipt Marked: "Curtis Jewelers Opal Guarantee... Opal type: Crystal, Carat Weight 20.68ct." Pendant Approximately 2.0L x 0.875W in. Opal Approximately 1.

Stamped 14kt. yellow gold Graduated Diamond Necklace is bar set with 45 full cut diamonds - approximate total weight 1.00 carat. The diamonds grade SI1-I1 in clarity and H-J in color. The center diamo

A black opal doublet, diamond and 14k gold ringfeaturing a black opal doublet, measuring approximately 18.40 x 13.55 mm, accented by three round brilliant-cut diamonds, on polished band; 8.41 dwt; siz

Vintage 14kt Graduated Opal & Diamond Ring, Victorian, Sz. 6. The ring has five opals, the center is 4mm and opal on ech side is 3.5mm and the end opals are 3mm. Between each opal is a bumped out acce