Suzanne Kalan's 18K Yellow Gold Rainbow Sapphire Band ($2,400) from her new Rainbow Fireworks collection features a spectrum of sapphires around the entire band. If you're a rose gold person ...

She added the dazzling Edwardian Rainbow Drop Earrings, which feature 10 colorful, dangling gemstones in various shapes — another bespoke piece in 18k yellow gold which is valued at $32,000.

Etsy 18K Yellow Gold Rainbow Ring Perfect for you and your forever love, this ring makes for one thoughtful and colorful gift.

Kalan’s 18-karat, rose- or yellow-gold Rainbow Fireworks Charm chokers (from $5,200) feature square-cut colored sapphires that dangle like delicate crystals from a chandelier.

The Integrated King Gold Rainbow is paved with more than 900 gemstones. Photo: Hublot A rainbow of colours is represented on two other new additions to the Big Bang range.

Harwell Godfrey 18kt Yellow Gold Rainbow Gemstone Beaded Necklace: Harwell Godfrey’s rainbow gemstone necklace is such an instant eye catches – I simply can’t take mine off it.

Etsy 18K Yellow Gold Rainbow Ring Perfect for you and your forever love, this ring makes for one thoughtful and colorful gift.