Mark Shimizu Design

05/15/2026

💙 Handmade sapphire jewelry in Sonoma County? Yes, please.

These beautiful lotus sapphire stud earrings were not only designed by Mark Shimizu, but also handmade by him right here in our Downtown Windsor jewelry store.

Crafted in 14kt white gold and featuring vibrant blue sapphires in a lotus-inspired design, these earrings are elegant enough for special occasions while still being perfect for everyday wear. The detail and sparkle on these are something you truly have to see in person.

If you’re shopping for fine jewelry in Windsor, CA, looking for a meaningful gift, or simply love locally handcrafted jewelry in Sonoma County, stop by and see what makes these so special.

✨ We also offer custom jewelry design, estate jewelry, engagement rings, and expert jewelry repair — all done on-site.

📍 Mark Shimizu Design
9070 Windsor Rd, Windsor, CA
🕙 Open Tuesday–Saturday | 10 AM–4 PM

Would you style these for everyday wear or save them for special occasions?

05/14/2026

Hello everyone! We are incredibly excited and honored to share that Mark Shimizu Design has been nominated for Best Jewelry Store in the Press Democrat’s Best of Sonoma County — FOR THE FIRST TIME EVER! 💎

As a family-owned jewelry store in Downtown Windsor, this nomination means the world to us. We’re so grateful to everyone who has supported our business through jewelry repairs, custom jewelry design, estate jewelry events, and shopping local here in Sonoma County.

🗳 Voting is open now through the 17th, and you can vote once per day. If you’d like to support us, we would truly appreciate your vote!

While you’re voting, we also encourage supporting some other fantastic local Sonoma County businesses:

🌸 Atrellis Flowers & Gifts — Florist
💼 Kara Stewart / FOCUS Strategic Solutions — Financial Advisor
👓 Lyon’s Optometry — Eyeglass Store & Eye Doctor
🍖 Sweet T’s Restaurant + Bar — Caterer
💈 Gentleman’s Barbershop — Barbershop
🍕 PizzaLeah — Pizza

🔗 Vote here:
https://bestofsoco.pressdemocrat.com/

Thank you again for all of the continued support. It truly means everything to our family and small business. ❤️

05/13/2026

May calls for emeralds 💚

This beautiful pear-cut emerald and diamond halo necklace is one of our favorite pieces currently in the showroom at Mark Shimizu Design in Windsor, CA.

Crafted in 14kt white gold, this modern necklace features a vibrant pear-shaped emerald surrounded by a delicate diamond halo for the perfect balance of elegance and sparkle. Whether you’re shopping for a meaningful gift, a birthstone piece, or simply love timeless fine jewelry, this necklace is a standout.

✨ 14kt white gold
✨ Pear-cut emerald
✨ Diamond halo setting
✨ $1,113

If you’re looking for emerald jewelry in Sonoma County or unique fine jewelry in Windsor, stop by and take a look in person.

📍 Mark Shimizu Design | Windsor, CA

05/12/2026

One of the biggest jewelry myths is that less metal means more sparkle. 💎

Many people assume that open settings automatically make a diamond sparkle more, but a diamond’s brilliance actually comes from the quality of its cut and polish and how well it reflects light back to your eye.

That means bezel settings and other styles with more metal around the stone can still sparkle beautifully when paired with a well-cut diamond. In fact, bezel settings are a great option for people with active lifestyles or anyone who works a lot with their hands because they offer extra protection for the stone while still looking elegant and modern. ✨

If you’re engagement ring shopping in Windsor or Sonoma County and want help finding the right style for your lifestyle, stop by and see us in person. We’re always happy to talk jewelry and help educate you on the differences between settings, metals, and diamond cuts.

📍 Mark Shimizu Design — Downtown Windsor, CA
💍 Custom Jewelry • Jewelry Repair • Estate Jewelry • Engagement Rings

Do you prefer bezel settings or traditional prong settings? Let us know in the comments! 👇

05/10/2026

Happy Mother’s Day from all of us at Mark Shimizu Design! 💐💎

Today is the FINAL DAY of our Estate Jewelry Trunk Show in Downtown Windsor featuring the stunning collection of Christoffel & Family Estate Jewelry.

If you’re looking for a special Mother’s Day activity in Sonoma County, stop by and explore a beautiful collection of vintage jewelry, antique rings, estate diamonds, heirloom-quality pieces, and one-of-a-kind fine jewelry from across every era. Whether you’re shopping for Mom, spending time together, or treating yourself to something timeless, this is your last opportunity to see this incredible collection in person.

As a family-owned jewelry store in Windsor, CA, we love bringing unique estate jewelry events like this to the community and helping people discover pieces filled with history, craftsmanship, and character.

📍 Mark Shimizu Design
9070 Windsor Rd, Windsor, CA
🕚 Open Today (Mother’s Day): 11 AM – 4 PM

Come celebrate Mother’s Day in Downtown Windsor and shop local before the trunk show ends! ✨

05/09/2026

The Estate Jewelry Trunk Show is officially underway at Mark Shimizu Design in Downtown Windsor! 💎✨

Christoffel & Family Estate Jewelry has brought an incredible collection of vintage and antique estate jewelry featuring beautiful pieces from across every era. From timeless diamond rings and heirloom treasures to unique statement jewelry, this collection is filled with one-of-a-kind finds you won’t see every day.

If you love vintage jewelry, antique jewelry, or unique fine jewelry in Sonoma County, this is the perfect weekend to stop by and explore the collection in person. Who knows — you may just discover a piece you never want to take off.

📍 Mark Shimizu Design — Windsor, CA
🕙 Open Today: 10 AM – 4 PM
🕚 Sunday: 11 AM – 4 PM

Come shop local, browse rare estate jewelry, and experience this special Mother’s Day weekend event in Downtown Windsor!

05/08/2026

Looking for unique Mother’s Day weekend shopping in Windsor, CA? 💎✨

This weekend, Mark Shimizu Design in Downtown Windsor is hosting our Estate Jewelry Trunk Show featuring the incredible collection of Christoffel & Family Estate Jewelry.

Explore a beautiful selection of vintage jewelry, antique rings, estate diamonds, heirloom-quality pieces, and one-of-a-kind fine jewelry brought to Sonoma County for this special event. Whether you’re searching for a meaningful Mother’s Day gift, love antique and vintage jewelry, or simply want to support local businesses in Windsor, this is the perfect opportunity to discover something truly special.

As a family-owned jewelry store located on the Windsor Town Green, we’re excited to welcome the community and visitors from across Sonoma County to browse this rare collection in person.

📍 Mark Shimizu Design
9070 Windsor Rd, Windsor, CA
📅 May 9–10

Spend the weekend shopping local in Downtown Windsor and discover timeless jewelry pieces filled with history, craftsmanship, and character. 💍

Windsor Chamber of Commerce & Visitors Center Downtown Windsor, California Christoffel Jewelry

05/06/2026

A sneak peek at just a few of the incredible pieces arriving for this weekend’s Estate Jewelry Trunk Show at Mark Shimizu Design 💎✨

We are beyond excited to share this stunning collection from Christoffel & Family Estate Jewelry with all of you! From vintage diamond rings and antique treasures to timeless heirloom-quality jewelry, every piece in this collection is truly one of a kind.

If you love vintage jewelry, estate jewelry, or unique fine jewelry in Sonoma County, this is an event you won’t want to miss. Perfect timing for Mother’s Day weekend shopping in Windsor, CA!

📍 Mark Shimizu Design — Downtown Windsor
📅 This Weekend
Saturday: 10 AM – 4 PM
Sunday: 11 AM – 4 PM

Come browse in person and discover a piece with history, beauty, and craftsmanship that you can’t find just anywhere.

05/06/2026

Looking for unique Mother’s Day shopping in Windsor, CA this weekend? 💎

Our biannual Estate Jewelry Trunk Show returns to Mark Shimizu Design THIS WEEKEND, May 9–10, featuring the incredible collection of Christoffel & Family Estate Jewelry.

Join us in Downtown Windsor to explore a curated collection of vintage jewelry, antique engagement rings, estate diamonds, heirloom-quality pieces, and timeless fine jewelry styles you won’t typically find in traditional jewelry stores. This special event is perfect for anyone searching for a meaningful Mother’s Day gift, collectors of vintage and antique jewelry, or anyone who appreciates craftsmanship and history.

As a family-owned jewelry store in Sonoma County, we’re excited to once again host this highly anticipated event and bring these one-of-a-kind pieces to Windsor for Mother’s Day weekend.

📍 Mark Shimizu Design
9070 Windsor Rd, Windsor, CA
📅 May 9–10

Stop by, browse in person, and discover a piece you’ll treasure for years to come.

05/02/2026

Thank you, Windsor Chamber of Commerce & Visitors Center, for always supporting us as best as possible! Don't forget to vote for us daily for "Best Jewelry Store" for The Press Democrat, "Best of Sonoma County."

Vote Here: https://bestofsoco.pressdemocrat.com/

🎉 Congratulations to our Windsor Chamber of Commerce members nominated for the Press Democrat’s Best of Sonoma County 2026! 🏆

This year, Windsor Chamber members are being recognized across Food & Drink, Real Life, and Uniquely Sonoma — and we couldn’t be more excited to celebrate them!

Now it’s time to show your support and vote for your favorite local businesses. ❤️

🍽️ FOOD & DRINK
Oliver's Market
Sweet T's Restaurant + Bar
Machado Burgers
Folia Bar + Kitchen
Himalayan Restaurant Of Windsor
Mary's Pizza Shack
PizzaLeah Windsor Ca.
Ume Japanese Bistro
Russian River Brewing Company
Barley & Bine Beer Cafe
Bricoleur Vineyards
Reed Palmer – Appellation Healdsburg

🏡 REAL LIFE
Kelly's Appliance Center
Poppy Bank
Exchange Bank
Redwood Credit Union
Dr. Kimberly Lyons – Lyons Optometry
Gregg Robert OD – Eyes On The Green
Kara Stewart CLTC – FOCUS Strategic Solutions
Garrett Ace Hardware
Airport Health Club
Sutter Santa Rosa Regional Hospital
Jack Woo Jr. Agency – Farmers Insurance
Mark Shimizu Design
Elite Excursions
SoCo Reflexology
Defense Block Security Services
Vanguard Properties
W Real Estate

🌿 UNIQUELY SONOMA
SMART Bike Path
Windsor Certified Farmers Market
Atrellis Flowers and Gifts
Oliver's Market
Windsor Golf Club
Appellation Healdsburg
Healdsburg Prune Packers
Safari West
Geyserville Inn
Russian River Vineyards
Bricoleur Vineyards

👏 Let’s support the businesses, restaurants, wineries, and local organizations that make Windsor and Sonoma County such an incredible place to live, work, shop, dine, sip, and visit.

🔗 Vote here: https://bestofsoco.pressdemocrat.com/

Vote local. Support local. Celebrate Windsor. ❤️