Artificial Intelligence applied to jewelry appraisal

ExJewel redefines jewelry pricing with the use of advanced A.I. (Artificial Intelligence) to appraise vintage, antique and second-hand jewelry as well as diamonds and other precious gemstones.



Jewelry pricing today is

  • 40% based on precious material costs
  • 60% based on brand’s margin
  • traditional since its set-up with no innovation
  • irregular from one appraiser to another
  • based on opacity of the supply chain
  • private 



Jewelry pricing with exjewel is

  • based on real-time material costs 
  • based on previously unquantified elements
  • determined by a powerful algorithm
  • standardised worldwide
  • transparent to all supply chain actor
  • accessible to everyone

How ExJewel works

ExJewel have carefully picked up different sources of gemstone & diamond pricing data to provide the most accurate results for your appraisals.


Data about current gemstone  and diamond prices 


Statistical analysis thanks to our A.I. technology


Gemstone & Diamond valuation based on real data

ℹ️ ExJewel collects the image of your #jewel or #gem in order to proof read your answers. If the photo does not match (for example: an oval diamond), this evaluation criteria is not counted in the estimation.

#ring #unbranded #GIAcertified #handmade #madeinUSA #2010 #prongsetting #Rhodiumplated #Solitaire #ArtDeco #Platinum #NaturalDiamond #10carat #VS2 #EmeraldCut #Kcolor #FaitFluorescence #nontreated

ℹ️ ExJewel basis its calculation on real-time material costs & immaterial costs

Introducing to the 6 criterias 🤑

Jewel appraisal [id] = [gem] + [metal] + [craft coefficient***] + [design coefficient] + [brand or margin*] + [1st life**]

*brand = this is required only if your jewel is branded, meaning from an established brand 

ex: Cartier, Van Cleef & Arpels or Tiffany & Co. (30+ brands are supported by ExJewel)

**1st life = this is required only if it’s a second-hand / estate / vintage jewel. 

ex: Your grandma’s jewelry

*** The coefficients are identified by a trend charter

ExJewel sets up the first digital jewelry estimation based on A.I. (Artificial Intelligence) that takes into account the price of materials (metal and precious stones) as well as the price of previously unquantified elements (design, production, first life, etc …). 

Color, Cut, Carat, Clarity

Is it a diamond alternative?

Is the gem certified?


Was your gem treated?

Does it have fluorescence?

Is the gem natural or synthetic?

What is the gem’s origin?

Conflict-free level

What is the type of the metal?

What is the price of gold today?

How much does it weight?

What is the purity?

Is it white or yellow gold?

Is it recyclable gold?

Ring, necklace, bracelet, brooch or cufflink

When was your jewelry created?

What is the type of your jewelry?

Is it an engagement ring?

Art Deco or Art Nouveau?

What was the main inspiration behind the design?

Is it trendy?

What is the finishing of the metal?

Where was it made?

Any cultural metalsmithing?

How was your stone set?

Was the gold plated? 

Was it rhodium treated?

Handmade or mass-produced

Branded or unbranded?

Is it Cartier, Tiffany & Co or …?

Is it fine jewelry?

Was it designed by a famous artist?

Where is the trademark?

Was your jewelry a copy?

How did you acquire this jewelry?

What is the initial price of your jewelry?

Is it broken or dirty?

Is it new, vintage or antique?

Was the ring for your grandmother?

Browse more on pre-owned jewelry

Your #jewel has been successfully appraised! 

ℹ️It usually takes approximately 3 minutes for our algorithm to appraise your jewelry which makes the fastest appraisal tool near you.

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happy appraisers 🤟
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data every appraisal rely on