The Geoffrey's Standard

We value customer satisfaction as much as we value quality. 

We specialize in repairing and resizing fine jewelry purchased from anywhere in the world for our customers. We are equally as highly regarded for custom designing jewelry; whether we are breathing new life into an inherited piece or creating something totally new. There is no design too complicated which is why we provide wax models and/or computer generated mock ups called CAD models before sending anything into production. Once the model is customer approved, we move forward with bringing the piece to life! 

Our master bench jewelers set each stone by hand underneath a microscope and always take extra time to double and triple check the entire piece to ensure integrity of design. We go above and beyond to continuously keep our customers in the loop should we need to inform you of something we find or make further recommendations. After each piece leaves our jewelers, they’re passed through rigorous quality control. Once passed, you get a phone call to pick up or approve shipment for retrieval! You can rest assured that there is no more secure or thorough jeweler to trust with your fine jewelry. 

Here’s a full list of services we offer:

  • Any repair on fine jewelry, purchased anywhere
  • Any resize on fine jewelry, purchased anywhere Professional ring cleaning
  • Stone setting and tightening
  • Lapidary services
  • Laser soldering
  • Rhodium plating
  • Ring reshaping
  • Pearl restringing
  • Watch battery replacement
  • Watch overhauls
  • CAD/ Wax models
  • Engraving
  • Independent appraisals - If your piece was purchased elsewhere
  • In house appraisals - If your piece was purchased her
  • Insurance replacement appraisals
  • Estate listings 

Pricing and Timelines of Services Offered

We take pride in offering the most competitive prices to our customers across the board. 

Repairs, Resizes and Jewelry Services: As each piece of jewelry is completely unique, we require seeing it in person before providing approximate pricing. Our design consultants evaluate each piece of jewelry under 10x magnification in order to understand the full scope of work needed. We would never want to overprice or underprice a service, so this ensures you are only receiving a price you can count on. We ask for 7 to 10 business days to complete these services and we call you the moment it’s ready. 

Custom Designs: We can work with you in person or remotely on any custom design! Should you be local, you can schedule an appointment or walk in during our business hours to meet with a design consultant. For all remote inquiries, please email us at or call us to connect directly to a design consultant. The process is exactly the same whether you're in person or remote! The time frame for completion varies depending upon complexity of design though we can normally accommodate any time frame should you find yourself in a rush. 

Appraisal Services: We have an inhouse GIA, Graduate Gemologist Certified Insurance Appraiser on site twice a week to provide all appraisal services. You can schedule an appointment for this on our website or call to make one directly. 

Watch services: While we do not change watch batteries on site, we send them off site to our trusted watch expert who is authorized to work on Rolex, Cartier, Patike Philipe, Omega, Baume et Mercier and TAG Heuer. We ask for 2 to 3 weeks for batteries and overhauls, more approximate timeline provided once we see the piece in person. Watch batteries range in price depending upon make and model.


Although we have made a name for ourselves by selling high-quality jewelry, Geoffrey's started as a jewelry repair shop, and we are still dedicated to helping people restore their keepsakes, making even the most damaged pieces of jewelry look new again. Because we know that your jewelry has sentimental value, we will handle it like it's our own, so you can trust us to get the job done right. Our business was originally founded on a reputation of full service, quality repairs.


In-House Experts with decades of experience.



Schedule an appointment to sell your jewelry and loose diamonds at either of our stores.

We will buy your diamond outright, by check or cash. You can also sell your diamond by consigning it in our store.


To get the highest price on your loose diamond, we can sell it for you by consignment in our store. We will agree on a price during your appointment.

As soon as your diamond sells, we will send a check to you by overnight express. This is a great option, if you don’t need the money right away.


Our goal is to provide you the best price and quality available anywhere.

If you see a lower price prior to purchase for a comparable item, we'll beat it.

**Must be verified prior to purchase.**


Geoffrey's Diamonds has recently partnered with Comconn to offer UnionPay as payment option for our customers.


Geoffrey's currently accepts Visa, Mastercard, Discover, American Express, Apple Pay, Google Pay and UnionPay.


We also offer in-store financing through Synchrony Bank and Wells Fargo.

If you have any questions about payment options or financing, please ask for details when you come visit, or give us a call at 650-591-0301 in San Carlos or 408-377-9898 in Campbell.