1.80 carat Old European Cut (2.30 carats total) in Platinum

1.80 carat Old European Cut (2.30 carats total in all 20 diamonds) platinum ring with pierced engraved patterning and miligrain;
Circa 1920, Art Deco, American; (Providence R.I. provenance)

Center Diamond : Old European Cut round brilliant, set with triple beads in each corner of its square crown; measured 8.58 x 8.60 x 4.07mm (depth% 474, tbl 56, girdle v thn to thin (frosted), pav 39, culet sl lg (a good 3mm octagon), symmetry & polish good, c/oc), color J, clarity I1, estimated 1.80 carats

Accent Diamonds : twenty, vintage single cut, 1.5 to 2.0mm (.015-.035ct, avg .0245ct), H-I, VS2-SI1, estimated total of the 20 = .48-.50 carat;

Total of all diamonds is 20, approximate total 2.30 carats.
Finger size : 7

Construction & Condition : hand-fabricated throughout; primary diamond, accented in the corners of its square frame by four tiny diamonds, centers a hand-cut pierced dome 15mm wide, of open scrolls, ribbons & other motifs bead-set with 16 additional accent diamonds, all above a half-round hoop tapering to minimum 2.12mm; hand-engraved patterning and high quality miligrain is extensive throughout, engraved laurel-wreath patterning extends the full length of the hoop, condition fine throughout.

Quality mark : "10% irid plat" struck inside hoop;
Gross wt : .1835 troy ounce (5.7 g)

Provenance : by family tradition, originally the engagement ring of the present owner's great aunt; made by a jeweler in Providence, Rhode Island

# csd kly 26001 .................................................................... $ 12,750.