The Vault Nantucket,
A Luxury Jewelry Boutique

Offering a curated selection of high-quality couture jewelry, including rings, earrings, necklaces, bracelets, phone cases, and more

Give The Gift of Diamonds

Shop the Diamond Favorites

Vault Nantucket in the Media

Enter KJ's Wardrobe

Learn Katherine Jetter's styling tips

Enter KJ's Wardrobe

Gifts under $3000

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Join "The Love Club!"

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The Vault Nantucket X

Angie Crabtree

The iconic gem phone cases from painter Angie Crabtree, exclusively at the Vault.
The Vault Nantucket x

Angie Crabtree

The iconic gem phone cases from painter Angie Crabtree, exclusively at the Vault.
The Vault Nantucket x

Angie Crabtree

The iconic gem phone cases from painter Angie Crabtree, exclusively at the Vault.
The Vault Nantucket X

Angie Crabtree

The iconic gem phone cases from painter Angie Crabtree, exclusively at the Vault.

Hoop, there it is!

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About The Vault Nantucket

The Vault Nantucket is an online jewelry boutique that offers an exquisite selection of high-quality couture jewelry, including rings, earrings, necklaces, bracelets, phone cases, and more. Explore luxury pieces from designers such as Octavia Elizabeth, Robinson Pelham, and Graziela Kaufman, among others.

Shop online or at our brick-and-mortar luxury jewelry boutique in Nantucket. Experience the adornment of rare gems and couture jewelry designs that are meant to thrill and enlighten collectors. Find your favorite piece and discover yourself through the art and expression of jewelry.

If you have questions about our fine jewelry, reach out to us today.

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