Trillion cut center stone?
Marquise Diamond Engagement Ring , Trillion Diamond Ring, Wedding Ring in 14k gold by capucinne on Etsy https://www.etsy.com/listing/206501039/marquise-diamond-engagement-ring
Trillion Aquamarine Sterling Silver Ring by Judy Evans : Jewelry Fashion
50 Stunning Wedding Rings For The Unique Bride - Paper & Lace
engagement + wedding ring perfection.
Wedding Set Turquoise Ring with Curved Diamond Band by capucinne
Alternative Engagement Rings For The Non-Traditional Bride - Image 26
Modern diamond wedding set. 18k solid gold. Elegant and sparkly diamond set. IMPORTANT! This is listing for V shaped band and trillion ring. Eternity
Tourmaline Trillion Ring, Engagement Gold Ring, Pink Tourmaline Gold Ring, Tourmaline Prong Ring, Trillion Ring, 14K Solid Gold Ring, GR0459
Men's 18k White Gold Trillion Ring, white gold combination ring with an inset trillion diamond weighing .25ct, 6mm band