About Us

The purchase of a piece of jewelry and or a fine timepiece is a very personal decision. K & Co. Family Jewelers understands this and they have been helping their guests make these selections for over 30 years.

Rich & Katrina Neciuk are the continuation of the Neciuk family legacy. A legacy that began over 70 years ago and continues today.

We boast the largest selection of engagement rings, bridal jewelry, fine diamond fashions, unique gemstone jewelry, and watches in the city of Brentwood. We are the source for all jewelry needs in Brentwood, Oakley, Clayton, Discovery Bay, Mountain House, and the surrounding areas. Come in today and see for yourself.

Come visit our beautiful downtown Brentwood showroom.


Jewelry Repair and Custom Design

We are proud to work on your jewelry, whether its a custom designed piece or restoring a family heirloom. We will be sure to take extra care of whatever your needs are.



Watch repair

Our shop provides simple services such as watch battery replacement while you wait bracelet adjustment, as well as full service watch over hauls and restoration. All repairs performed with certified parts ensuring your timepiece will continue to keep accurate time for years to come.



Our Guarantee

All repairs and custom work guaranteed to last. We provide a 1 year warranty on all watch repairs and a conditional lifetime warranty on custom design and jewelry repair. Noting that wear and tear will occur and is not considered a craftsmanship defect.



Our Staff

Rich Neciuk - Owner & Master goldsmith/bench jeweler
Katrina Neciuk - Owner & Jewelry & fashions buyer

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