Family-owned & operated · Since 2006
Sell Opal and Opal Jewelry in San Diego
Give your opal jewelry a closer look. Our San Diego specialists help you understand its appearance, construction, condition and setting, then explain the next evaluation step. Start with the intact piece and the information you already have.
907 6th Ave, San Diego, CA 92101 · Directions & parking

Reviews
Honest. Genuine. Professional. The staff is very friendly and knowledgeable, I was very impressed with Kevin’s candor and Janelle’s kindness. There are no pressure tactics, the items are of top-tier quality, and the service is exceptional. I recommend this business to anyone looking for luxury/ designer items and for jewelry buyers/ seller.
View Google profile ↗Such a welcoming environment. Knowledgeable, professional and friendly staff and service . I will continue to use and recommend San Diego Jewelry Buyers for all jewelry needs. You should too! You won’t be disappointed.
View Google profile ↗I had a wonderful experience, Kevin seemed very upfront and knowledgeable about what I was inquiring. The store was easy to access downtown and they even had parking spots for free for customers, which was great and convenient. The store itself was nice looking and professional. The experience itself was no pressure and no hassle. I have no complaints. I would recommend anybody that needed to sell jewelry or gold that they were trying to offload To check them out. Five stars would use again!
View Google profile ↗
Rating and count checked 2026-10-19. See Google for the latest.
Start with what you know
Tell us about your opal piece.
No photo or certificate is needed to begin. Start with your contact details, then add what you know about the piece.
We offer free verbal appraisals for purchase and/or loans with no obligation or pressure to sell.
Understand your piece
What matters when evaluating opal
Look at appearance in ordinary light
For opals that display play-of-color, its strength and pattern help describe the appearance. Body color, transparency and condition matter too. Not every opal shows play-of-color, and a locality name alone does not establish quality or a purchase offer.
If a specialist asks for images, use unfiltered stills and a short video as you gently change the viewing angle. Include the side and back when safely visible. Accurate images are more useful than digitally intensified colors or a single dramatic lighting effect.
Distinguish the material from the construction
A solid opal, an assembled doublet and an assembled triplet are different constructions. Doublets and triplets can contain natural opal with added backing or a transparent cap. An assembled piece is not automatically a wholly imitation stone, but it should not be described as one solid opal.
A mounting can conceal the edge or backing. Microscopic examination and appropriate additional checks help investigate the actual piece; ordinary photos alone do not reliably establish its construction. Existing identification and treatment reports add useful context.
Protect the stone and consider the whole jewel
Bring the opal in its existing setting or protective container. Tell us about chips, cracks, repairs or known treatments. Do not scratch-test it or remove it from a ring to prepare for an inquiry. We discuss any proposed additional examination before you authorize it.
A precious-metal setting, maker’s signature and craftsmanship deserve their own assessment alongside the stone. Ask about suitability before arranging a visit for a loose opal or sending a piece remotely. You can begin the inquiry without having photographs or paperwork ready.
Expertise, equipment & market knowledge
A closer look. An offer you understand.
You work one-on-one with our specialists. Our team includes GIA credential holders and experienced jewelry professionals. We examine the complete piece, explain what we find and discuss the market factors behind our assessment. You can ask questions and take time to decide.
Long-standing buyer and wholesaler relationships help us understand resale demand beyond a scrap-only calculation. A stone, signed setting or well-made jewel can deserve separate consideration. We explain which characteristics support the offer rather than asking you to accept a number without context.
Microscopy: condition, construction and detail
Our gemological microscopes help us examine internal features, surface wear, settings and workmanship with suitable lighting. Those observations can reveal details that matter to a gemstone or the complete jewel. We interpret them alongside other appropriate checks rather than treating magnification alone as proof of identity or origin.
Refractometry and thermal screening: narrow the possibilities
Our GEM Instruments Duplex II refractometer measures how a suitable, accessible gemstone surface bends light. Our Presidium Gem Tester provides thermal-conductivity screening on suitable materials. These methods supply different clues; overlapping results and the way a stone is mounted can limit what they establish. Neither instrument alone provides an authenticity certificate or a price.
Raman spectroscopy: investigate the material
Raman spectroscopy compares a material’s light-scattering spectrum with reference information to help investigate its identity. We select appropriate methods for the question and explain their findings. Some treatment, natural-origin or geographic-origin questions need additional work by an independent gemological laboratory; no single instrument settles every question.
Before you visit
Can a video prove that my opal is solid rather than a doublet?
No. Video helps show appearance, but construction may require physical examination. Include side and back views only when they are visible without removing or damaging the setting.
Is an Australian locality name enough to establish value?
No. The actual opal’s quality, construction, condition and complete setting matter. A locality name does not replace examination or establish a particular purchase price.
Should I take my opal out of its ring before contacting you?
No. Keep the piece intact and bring any paperwork you already have. A specialist should discuss further examination or any proposed removal with you first.
Does an identification report grade my opal or set its price?
Not necessarily. For example, GIA evaluates opal for identification and detectable treatments but does not issue an opal quality grade or purchase price. Share the full report so the specialist can distinguish its findings from a valuation.
Can I ask about a loose opal or an assembled piece?
Yes, start an inquiry and describe whether it is loose or mounted and any known construction or treatment. Staff will confirm suitability; we do not promise to buy or lend against every loose, assembled or treated opal.
Not local? Discuss selling jewelry from home before shipping. Considering borrowing? Ask about an eligible jewelry loan and its written terms.
