14kt Green Tourmaline Ring Metropolitan Museum of Art

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When we first saw this ring our surprise was palpable when we spied the MMA mark inside the shank. The quatrefoil is a framework used in decorative arts, architecture and jewelry and most popular in the Gothic and Renaissance eras. Used here the quatrefoil holds a deep green tourmaline in a claw mounting in 14kt yellow gold. Blooming of gold is a finishing technique used often in the mid to late Victorian era which burns off the surface alloys on the gold leaving an alloy free, thin layer of soft pure gold and resulting in a rich gold patina. The gold hue on this ring certainly has the bloomed appearance.

Condition: Excellent; light surface scratches
Measurements: Ring size 6 3/4; 3/8" across
Circa: Mid to late 20th Century