Signed Jabel vintage 18k white gold .40 carat diamond engagement wedding bridal solitaire ring, size 6. Features a simple classic white gold four-prong solitaire setting with a round brilliant cut .40 carat diamond.
cut: round brilliant cut
symmetry: very good
girdle thickness: thin
clarity: SI1-SI2 to note: *indented natural*-
Naturals: Small parts of the original rough diamond's surface which are left on the polished diamond, frequently on or near the girdle. While these are blemishes, they might also be regarded as a sign of skilled cutting; the presence of a natural reflects the cutter's ability to design a beautiful polished gem, while still retaining as much of the original crystal's weight as possible. In many cases, naturals do not affect the clarity grade. In most cases, they are undetectable to the naked eye. Another type of natural is the *Indented Natural; in this case, the portion of the original rough diamond's surface which is left on the polished diamond dips slightly inward, creating an indentation. Usually, the cutter makes an effort to cut the polished diamond so that the indented natural will be confined to either the girdle or the pavilion (making it undetectable to the naked eye in the face-up position).
Set into a simple classic 18k white gold solitaire mounting with a secure four prong setting. Hallmarked "18K" on the inside of the ring shank as well as maker signed "Jabel". Shank measures 2.3mm width at the shoulders tapering to 1.5mm at the back of the ring shank. Weighs 2.6 grams. In outstanding condition, a vintage piece no more than 50 years of age. Jabel Ring Manufacturing Company- Newark, New Jersey. Founded 1916. Jabel is renowned for their use of very high quality die struck manufacturing methods. Diamond measured with Presidium dial gauge. Fluorescence measured with GIA Instruments Diamond UV Light. Diamond color measured with Master Color Grading Set and GIA Instruments Diamond Light. Graded using GIA (Gemological Institute of America) grading standards while mounted. We give a two step color and clarity range based on the confines and fact that the diamond is mounted while grading it.
GIA diamond clarity grading scale:
IF- Internally Flawless
VVS1, VVS2- Very Very Small Inclusions
VS1, VS2- Very Small Inclusions
SI1, SI2- Small Inclusions
I1, I2, I3- Imperfect
GIA diamond color grading scale:
D, E, F- Colorless
G, H, I, J- Near Colorless
K, L, M- Faint Yellow
N, O, P, Q, R- Very Light Yellow
S, T, U- Light Yellow
V, W, X, Y, Z- Fancy Yellow