Pamela Froman 18K Brown Gold and Diamond Crushed Beauty Stacker Eternity Ring. Pamela Froman 18K Gold and Diamond Stacker Rings, priced individually and each design available in any of the golds that Pamela mixes herself. From white gold to yellow gold, brown gold, green, and pink gold. She custom mixes alloys with pure gold to achieve an astonishing array of colors. Pamela uses only GVS diamonds in her work. 0.75 tcw of diamonds.