Circa 1930s Diamond Engagement ring. an Old Mine Cut diamond weighing 0.11 cts and assessed in the setting as H color and SI1 clarirty is set square atop a low dome accented with single cut diamonds (4 = 0.03 cts, HI color and SI clarity). This lovely ring is a size 7.54 and stamped with the maker's mark of Silbermann, Kohn, & Wallenstein. A vintage original. 14K yellow and white gold. Vintage Signet Ring With Diamond Accents, Vintage Single Cut Diamond Ring For Formal Events, Vintage Formal Signet Ring With Diamond Accents, Vintage Single Cut Diamond Ring For Formal Occasions, Vintage Signet Ring With Diamond Accents For Formal Events, Vintage Signet Ring With Diamond Accents For Formal Occasions, Antique Diamond Signet Ring With Brilliant Cut, Antique Diamond White Diamond Ring, Antique Single Diamond White Diamond Ring