Colorful Revolution

Katherine Jetter is transforming the way we experience rare gems and couture jewelry. Step inside The Vault to explore her hand-picked portfolio of rarities.


Delve into the earth's rarest wonders.

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K.J. Picks

Explore Katherine Jetter’s most-loved pieces of the summer.

Shop K.J. Picks

Design a custom piece.

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FEATURED DESIGNER

Divine Feminine

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Testimonials

★★★★★

“The Vault is my favorite store on Nantucket. It feels like I've entered a jewel box filled with beautiful and interesting pieces I don't see anywhere else. Katherine has curated the best from up-and-coming designers, as well as established ones, and she enjoys showing me all the exquisite jewelry as much as I enjoy trying it on!  With her guidance and insight, Katherine has helped me find many unique pieces that I will wear and treasure forever.”

Susan Nelson
Vault Customer
★★★★★

“Whether it’s one of Katherine’s own designs or a designer from her curated selection, I’ve been in love with everything I’ve invested in with Katherine’s guidance. I always feel chic when I wear my Vault treasures and you can never feel too chic.”

Victoria McManus
Vault Customer
★★★★★

“Katherine and The Vault have many things in common, like their beauty, brilliance, quality, and uniqueness. I've had the pleasure of owning several of Katherine’s gems and I always enjoy shopping the beautiful designers and pieces. The Vault is the grown woman’s version of a Candy Store! You can always find something to love, whatever your taste and style may be.”

Penny Bradley
Vault Customer