Amazon has really nice rings less than $20. I currently wear a S925 ring from there so as to avoid wearing my actual engagement ring everyday since I work at a hospital. Mine was $18.99. Check this out.
"Amazon.com: EAMTI 1.25CT 925 Sterling Silver Rings Round Halo CZ Engagement Rings for Women Cubic Zirconia Wedding bands Promise Rings for Her Size7 : Clothing, Shoes & Jewelry" https://www.amazon.com/EAMTI-Sterling-Engagement-Zirconia-Wedding/dp/B09898YLNZ/ref=mp_s_a_1_8?crid=3JO6KZPWERP5T&keywords=halo+rings+for+women&qid=1657595273&sprefix=halo+ring%2Caps%2C201&sr=8-8