Our Services

Jewelry Appraisal Services for Minneapolis/St. Paul

Fast. Easy. Dependable.

We come to you!

Minneapolis Gemological Services makes it easy and fast to obtain valuation of your precious jewelry and gemstones.

Call for an appointment and we will bring our state-of-the-art portable appraisal system to your home, office or any other location that is most convenient for you. 

Some of our services include:

Jewelry and Gemstone Appraisals

• Insurance Replacement

• Estate tax or divorce settlement

• Donation of sale

• Equitable Distribution of property

Jewelry Brokerage and Sales

• Your jewelry can be sold to reputable retailers and dealers

• Diamonds and colored gemstone sales


Carl is available to answer any questions you may have regarding jewelry and gemstone appraisals, purchases and sales.

Speaking engagements are offered for schools, professional organizations, and civic groups. Please call or email for more details.

Laboratory Equipment

State-of-the-Art Portalab Equipment includes:

  • Leica SA-6 microsope with 10x to 120x zoom range. 
  • Fiberoptic light source and probe.  
  • Polarizing attachments.  
  • Long and shortwave fluorescent unit.  
  • Diamond-color grading light source.  
  • Refractometer with light source.  
  • Prism spectroscope.  
  • Leverage gauge.  
  • Dichroscope.
  • Immersion cell.
  • Diffuser plate.
  • Pinpoint light attachment.
  • Chelsea filter.
  • Hanneman filter set.  
  • Kassoy gold test acid kit.  
  • 10x Hand loupe.  
  • Cloud Dome photography kit.
  • A & D ED-1200 electronic scale.  
  • Ott-lite.  
  • Quantum Leap Professional Appraisal Software with Gemesquare color grading program.

Drop us a line or give us a call!

With more than 38 years in fine jewelry, Carl Weimer offers expert knowledge and accuracy in gem appraisal. We look forward to helping you with your fine jewelry appraisal needs!



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