EF COLLECTION White Diamond & White Topaz Emerald Cut Stud Earrings in Metallic Gold. EF COLLECTION White Diamond & White Topaz Emerald Cut Stud Earrings in Metallic Gold. 14k gold earrings. Total white diamond weight: .10ctTotal white topaz emerald weight: .80ct. Post back closure. Measures approx 0.25 H. Made in Hong Kong. EFCR-WL71. EF-60761. Founded by Emily Faith in 2010, EF Collection features delicate pieces that can be worn and enjoyed every day with an elegant, sexy, and feminine feel. The brand focuses on the use of 14k golds with handset diamonds and precious stones. While each piece stands alone, they are enhanced when mixed, matched, layered and stacked.