The chain measures about 19 inches long, from end to end, and should fit at roughly 18 and 15/16 inches in length, closed. It is approximately 1 millimeter, or just over about 1/32 of an inch, wide. Stamped on the spring ring clasp, "585", stamped, "14K", again on an inline lozenge, and signed with an "RDR" maker's mark.
The pendant measures approximately 15/16 of an inch, or about 23.8125 millimeters, in diameter and just over 1/8 of an inch, or about 3.5 millimeters, deep.
Though it's nearly impossible to provide a perfectly precise measurement for a set stone, each of the eight canary yellow and 16 white diamonds is approximately 2 millimeters in diameter, for an estimated carat weight of .03 carats each, giving the pendant a total carat weight of roughly .72 carats of diamonds. (Included please find a US Quarter in the photographs, for the measurement-challenged and ruler-averse.) Stamped on the back of the pendant, "14K", and signed, "JWBR", along with a stamp with the letters and numbers, "GSL06062". Also discreetly acid tested as solid 14K gold. Diamonds tested with a Mizar DiamondNite.
Combined weight is approximately 2.65 grams, which includes the stone weight, of course.
This necklace is in excellent vintage condition, but will likely exhibit the expected light surface scratches to the gold from normal wear. No missing or damaged diamonds. The chain has no kinks or bends, and the spring ring clasp works well and holds securely. Lightly cleaned by hand, but it has not been professionally polished.
A stunning and unusual, boldly sized but feminine, signed vintage I4K gold and diamond round pendant necklace. Amazing scintillation and richness in this versatile piece of jewelry.