The perfect shade of blue

Gem: 5 Multi Colored Dyed Jade

smooth shoulders are inlaid with small square diamonds in a channel set row

or as a cocktail ring that transitions from day to night

The decorative prongs protect and frame the stone to perfection

Antique J.E. Caldwell & Co. Old Mine Cut Diamond Platinum and Gold Bar Pin inv 6531 The perfect shade of blueThis bar pin exemplifies the refined elegance that defined J. E. Caldwell & Co.'s Art Deco output. The brooch showcases a striking bezel set Old Mine Cut diamond at its center, flanked by complementary accent stones that create a harmonious linear compositiona hallmark of the period's geometric sensibility. The interplay of platinum and yellow gold demonstrates the jeweler's mastery of mixed metals, a technique that added depth and visual interest to