Damson Coastline rings-- interlocking rings created from a stretch of coastline of your own choosing.
Now I'm really not big on the whole wedding band added to the engagement ring, but this one I think I could definitely do. It's gorgeous.
0.50 Carat (ctw) 10k Gold Round Diamond Ladies Swirl Bridal Engagement Ring Matching Band Set 1/2 CT I. Love. Matched. Sets.
Oval Diamond Twisted Criss-cross Pave Engagement ring and Interlocking Wedding Band by mdc-diamonds on Polyvore
Round Diamond Twisted Criss-cross Pave diamonds Engagement ring in 14K White Gold
Gold Celtic Wedding Set with Diamond R84 A SET. Wedding ring & band
Unique interlocking vintage Diamond engagement ring and wedding band in a floral cluster style, Vintage engagement and wedding band set. by HiddenAtticAntiques on Etsy https://www.etsy.com/uk/listing/483205985/unique-interlocking-vintage-diamond
Entwined Bridal Set: Engagement Ring & Matching Wedding Ring..that's kinda cool! Wonder if it comes in yellow gold
White & Rose Gold Bridal Set by Barkevs: very pretty!
Silver interlocking Ring Mountain Range Ring Coast by firewhite, £45.00