Stacking Set Featuring Three Rings Adorning Conflict Free Lake County Diamonds, One Engagement Ring And Two Chevron Wedding Bands With Small Stone Chips. Available In Bright .925 Sterling Silver Or Oxidized .925 Sterling Silver Available Sizes: 3.5 To 12 California - Lake County Diamonds Are Highly Prized Volcanic Quartz Crystals Nicknamed Similarly To Herkimer Diamonds, They Are Pressurized Volcanic Crystals That Were Formed Hundreds Of Thousands Of Years Ago When Our Volcano Last Erupted...