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Sell Your Jewelry & Gold with Expert Buyers in Menlo Park
Silicon Valley Diamond & Jewelry Buyers has built a reputation as a trusted destination for selling fine jewelry, diamonds, colored stones, luxury watches, and precious metals. With over a century of combined experience, our team operates from strategically located purchasing suites in Menlo Park and San Francisco, serving clients across the Silicon Valley and Bay Area. Our GIA-trained buyers specialize in providing fair, transparent valuations while maintaining the highest standards of discretion and security.

We prioritize customer satisfaction through personalized service, leveraging our deep industry expertise to simplify the selling process. Our commitment to integrity and professionalism has solidified our position as a leading jewelry buyer in Northern California.
Services
Sell Jewelry Sell Diamonds Sell Luxury Watches Gold Buying Private Appointments
Highlights and features
  • We offer over 100 years of combined experience in jewelry valuation.
  • Our team includes GIA-trained experts for accurate diamond assessments.
  • We provide transparent pricing with no hidden fees or commissions.
  • We maintain strict confidentiality during all transactions.
  • We operate secure, professional purchasing suites in convenient locations.
Associations and certifications
  • Gemological Institute of America (GIA)
Services
Sell Jewelry
We specialize in purchasing fine estate jewelry, including diamonds, colored stones, and precious metals. Our GIA-trained experts provide accurate valuations based on current market trends. Clients receive competitive pricing with no hidden fees or commissions.
Sell Diamonds
Our diamond specialists evaluate cut, clarity, color, and carat weight to ensure fair pricing. We buy loose diamonds, engagement rings, and diamond-studded jewelry with transparent grading processes.
Sell Luxury Watches
We purchase high-end timepieces from brands like Rolex, Cartier, and Patek Philippe. Our team assesses authenticity, condition, and market demand to offer premium prices for luxury watches.
Gold Buying
We buy gold jewelry, coins, and bullion with immediate payment upon agreement. Our pricing reflects real-time gold market rates, ensuring clients receive maximum value for their items.
Private Appointments
Clients can schedule exclusive appointments at our Menlo Park location for discreet, one-on-one consultations. This service ensures personalized attention and secure handling of valuable items.
Questions
Where can I sell jewelry in the Silicon Valley?
66mint Fine Estate Jewelry is the premier buyer in Menlo Park, offering competitive prices for diamonds, gold, and luxury items.
How do I get an estimate for my jewelry?
Request a free online estimate or contact our GIA-trained buyers directly at (650) 234-1345 for a personalized valuation.
What types of items do you purchase?
We buy diamonds, colored gemstones, luxury watches, gold, silver, platinum, and fine estate jewelry with no minimum requirements.
Why choose 66mint over other buyers?
Our team combines GIA expertise, transparent pricing, and secure transactions to ensure the best value for your items.
Can I schedule a private appointment?
Yes, we offer private purchasing appointments at our Menlo Park location for personalized, discreet service.
How are payments processed after selling items?
Payments are made immediately upon agreement, with options for cash, check, or secure electronic transfer.