J & K Best Jewelry, located at 1475 S Harbor Blvd, Ste B8, Fullerton, CA 92832, specializes in the creation of custom engagement rings and offers a range of jewelry services, including repairs and gold buying. With a commendable overall rating of 5.0 from 10 reviews, the jeweler is known for its attentive service and variety of ring settings, allowing customers to take their time when making selections. Joanne, a notable staff member, has been praised for her patience and the assistance she provides in the ring-setting process.

Operating hours are as follows:
- Monday: 11:00 AM - 6:00 PM
- Tuesday: 11:00 AM - 6:00 PM
- Wednesday: 11:00 AM - 6:00 PM
- Thursday: 11:00 AM - 6:00 PM
- Friday: 11:00 AM - 6:00 PM
- Saturday: 11:00 AM - 5:00 PM
- Sunday: Closed

Overall Sentiment from Online Customer Reviews:
The overall sentiment from online customer reviews is highly positive, with an estimated 90% of reviews reflecting satisfaction with the services offered, while 10% of responses fell into a neutral category.

Best Review:
One positive review highlighted the exceptional variety of ring settings available and praised Joanne for her helpfulness during the selection process, noting that customers felt welcomed and appreciated.

Worst Review:
A review pointed out minor delays in service during peak hours, suggesting that the jeweler could improve on response times.

*For this overview, customer feedback was viewed on Yelp, Google, and Facebook.