The Vault Nantucket, A Luxury Jewelry Boutique

Katherine Jetter is transforming the way we experience rare gems and couture jewelry. Step into Katherine's collection of hand picked rarities.

Stud Club

Elevate Your Ear Stack

Stay on Trend with our Latest Arrivals

Fabulous pieces for all your spring and summer festivities, from cocktail rings to statement earrings — be the best dressed guest!

The Vault Nantucket
The Vault Nantucket
The Vault Nantucket
The Vault Nantucket

Get the Look

1
RainSun Tennis Bracelet, 6.5"
Regular price $9,500.00
Sale price $9,500.00 Regular price
2
Vega Necklace
Regular price $38,000.00
Sale price $38,000.00 Regular price
3
Radiance Coil Ring
Regular price $8,500.00
Sale price $8,500.00 Regular price
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Welcome to KJ Curates

Learn Katherine Jetter's styling tips

Testimonials

“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

“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