Easy 30-Day Returns & Financing

Free U.S. Shipping & 90-Day Resizing

Every Purchase Funds our Non-Profit

Portland Showroom

Experience the MiaDonna difference for yourself while
shopping the best lab-grown diamonds in Portland, Oregon.

We're reinventing the fine jewelry shopping experience: No crowds, personalized service, exceptional quality, ethical diamonds, affordable pricing, easy parking, and a glass of champagne! The way it's supposed to be.

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Real MiaDonna Customers, Jasmin and Alexia

PORTLAND OREGON





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Popular FAQ

To ensure the highest quality, all of our jewelry is handcrafted and made to order to your specifications, aside from ready-to-ship items. Once your order is received and processed, it will take 10-15 business days to craft the jewelry. Once completed, your order ships domestically via UPS 2-Day Air or internationally in approximately 5 to 7 days, depending on the destination country.

Ready-to-Ship items are pre-crafted and will ship the same business day with free 2-day shipping (domestic) if ordered before 11:00 am PST, Monday through Friday. Rings needing to be resized will require two days of additional processing time. Next-day shipping is available upon request for an additional charge.

Loose Stones ship in approximately 5 business days from order.
All purchases made in our Portland, Oregon store and most online purchases are not charged sales tax.

Should sales tax apply to your order, this will show up in your shopping cart when checking out. As of 2023, we only charge sales tax to online orders shipping to WA, CA, IL, and FL
In the midst of your shopping journey, take respite in an elegant lounge, where you can unwind and savor a selection of decadent refreshments. Enjoy in a glass of champagne or enjoy a perfectly brewed cup of artisanal tea, while browsing our technology, loose stones and fine jewelry with one of our expert jewelry specialists.
We like to keep appointments to 60 minutes long to give us adequate time to prepare for our next appointment.
It's exactly the same, you just have to supply your own beverage :)
In the midst of your shopping journey, take respite in an elegant lounge, where you can unwind and savor a selection of decadent refreshments. Enjoy in a glass of champagne or enjoy a perfectly brewed cup of artisanal tea, while browsing our technology, loose stones and fine jewelry with one of our expert jewelry specialists.
To cancel or change your appointment, simply click on the appointment confirmation email.
Of course! However, we do ask that you try to keep numbers to a minimum to ensure we can give you our full attention.
In Portland, Oregon, there is a sales tax exemption. The state of Oregon does not have a statewide sales tax. Therefore, if you were to pick up an order from MiaDonna's store in Portland, you would not be charged sales tax on the purchase. Order instore or order online and select "Portland Oregon Store pickup" at Checkout.
While we’d love to have our entire collection on display, most of our jewelry is bespoke and made just for you. If there is a particular style or diamond you’d like to see, we recommend calling us before stopping by to confirm it’s available for viewing.

Stop by and play with Diamonds!