The Collector Fine Jewelry, located at 912 S Live Oak Park Rd, Fallbrook, CA 92028, operates in San Diego County and specializes in high-end jewelry, including custom engagement ring creation. The store is known for its unique and luxurious selection of fine jewelry, mineral specimens, and personalized service. Customers have praised the knowledgeable staff, including Sandy Youngdale, who assists in guiding clients through the process of designing their perfect engagement rings. Reviews highlight the accommodating and friendly atmosphere, making it an ideal destination for couples seeking something special.

Operating hours are as follows:
- Monday: 9:30 AM - 4:00 PM
- Tuesday: 9:30 AM - 4:00 PM
- Wednesday: 9:30 AM - 4:00 PM
- Thursday: 9:30 AM - 4:00 PM
- Friday: 9:30 AM - 4:00 PM
- Saturday: Closed
- Sunday: Closed

Overall Sentiment from Online Customer Reviews:
The overall sentiment from online reviews is overwhelmingly positive, with approximately 90% positive feedback, 5% neutral comments, and 5% negative remarks. Customers frequently commend the exceptional customer service and quality of jewelry, while a few reviews expressed concerns about appointment-only policies and limited weekend hours.

Best Review:
Debbie articulated her admiration for the stunning jewelry collection and highlighted the attentive and knowledgeable staff, emphasizing the reasonable pricing for high-end pieces.

Worst Review:
While specific negative feedback was limited, some customers noted the inconvenience of the store's appointment-only policy, which might not suit everyone’s schedule.

* For this overview, customer feedbacks were viewed on Yelp, Google, and Facebook.