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Round|Natural|GIA

3.12ct E SI2 Round Natural Diamond

EX • E/SI2

Diamond specifications and retailer prices

From €31,139 EUR
CA$48,318 CAD
As of October 30, 2026
Save €7,811 EUR (20%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €38,951 EUR at The Diamond Guys · As of October 31, 2026
View at The Diamond Guys

About this 3.12ct natural round diamond

This 3.12ct natural round sits in the three to five carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 5 retailers as of October 30, 2026, with prices from €31,139 to €38,951, a €7,811 spread on the same certified stone. The Diamond Guys lists it at €38,951. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.12
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions9.23 × 9.29 × 5.81 mm
L/W Ratio1.01
Top View
9.23 mm9.29 mm3.12 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 57.0%CrownGirdle: MediumPavilionCulet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €31,617 EUR|Low: €31,139 EUR|High: €38,951 EUR|Avg: €34,756 EUR|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
The Diamond Guys
October 24, 2026
Retailer 7€31,139 EUR
Retailer 1€31,617 EUR
Retailer 4€33,355 EUR
Retailer 5€34,689 EUR
Retailer 3€34,922 EUR
Retailer 2€36,003 EUR
Retailer 6€36,023 EUR
The Diamond Guys€38,951 EUR

14 data points across 8 retailers

5 retailers€31,139 EUR to €38,951 EUR

A
Cheapest Retailer
-
€31,139 EUR
CA$48,318 CAD
A
Retailer 2
-
€31,617 EUR
$35,323 USD
View
A
Retailer 3
-
€34,922 EUR
$39,015 USD
View
Retailer 4
-
€36,003 EUR
£31,671 GBP
View
Price last confirmed 32 days ago
Most Expensive
B+
The Diamond Guys
1965963488 · Oct 31
€38,951 EUR
$43,516 USD
View
4 more retailers have this diamond
Prices start from €31,139 EURSave up to €7,811 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.12ct Round
€31,139 EUR