The Abingdon - Vintage Black Opal Diamond 14k Gold Platinum Necklace

Black opal, diamond 14k white gold platinum necklace - Mid century retro - Estate jewelry
An incredible estate necklace featuring a black opal and diamonds set in a gorgeous vintage mounting.  On the bottom of the piece we can see a round faceted cut opal, additionally we can see a 0.40 carat round brilliant cut diamond another 0.16 carat round brilliant cut diamond and a number of single cut diamonds all stones with total diamond weight of 0.81 carat.  The necklace is mostly 14k white gold with a platinum accent.  This necklace is what we call a married piece consisting of elements from different eras.  The mounting looks like it was made mid-century with a modern 14k white gold chain
Metals: 14k White Gold with a small platinum design element
Gemstones: one black opal round faceted cut 6.4mm, lovely play of color greens blues reds yellows, likely Ethiopian origin; diamonds - one round brilliant cut diamond approximately 0.40 carat by formula 4.63x3.02 estimated clarity VS2/color G-H; one round brilliant cut diamond approximately 0.16ct estimated clarity SI2 /color G-H; eleven single cut diamonds total diamond weight approximately 0.25ct
Gemstones measured and graded while set subject to mounting limitations, weights calculated by formula, all weights/grades are approximate.  Colored gemstones have not been tested for color or clarity enhancement treatments.  Photography - colored gemstone colors may vary on different monitors and in different lighting.  Opal photos taken with fluorescent lighting to show off full play of color
Additional items included: a lovely presentation box
Total Weight: 6.8g
Dimensions: chain is approximately 16 inches long and the mounting is 1 1/4 inch across (E-W)
Markings: chain marked 14kt & Italy, mounting is not marked, tested 14k, the bottom piece tested platinum
Condition: Estate item in very good condition consistent with normal wear
 SKU: JA2664