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Round|Natural|GIA

3.12ct E SI2 Round Natural Diamond

EX • E/SI2

Diamond specifications and retailer prices

From £25,848 GBP
As of November 2, 2026
Save £6,484 GBP (20%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £32,332 GBP at The Diamond Guys · As of November 6, 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 12 retailers as of November 5, 2026, with prices from £25,848 to £32,332, a £6,484 spread on the same certified stone. The Diamond Guys lists it at £32,332. 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: Nov 2
Current: £25,848 GBP|Low: £25,848 GBP|High: £32,332 GBP|Avg: £28,798 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
The Diamond Guys
November 5, 2026
Retailer 1£25,848 GBP
Retailer 6£26,245 GBP
Retailer 2£27,687 GBP
Retailer 3£27,908 GBP
Retailer 7£28,795 GBP
Retailer 5£28,988 GBP
Retailer 8£29,885 GBP
Retailer 4£29,902 GBP
The Diamond Guys£32,332 GBP

13 data points across 9 retailers

12 retailers£25,848 GBP to £32,332 GBP

A
Cheapest Retailer
-
£25,848 GBP
A
Retailer 2
-
£25,848 GBP
View
A
Retailer 3
-
£26,245 GBP
View
A
Retailer 4
-
£26,245 GBP
View
A
Retailer 5
-
£27,687 GBP
View
A
Retailer 6
-
£27,908 GBP
View
A
Retailer 7
-
£28,795 GBP
View
A
Retailer 8
-
£28,988 GBP
View
A
Retailer 9
-
£28,988 GBP
View
B+
Retailer 10
-
£29,902 GBP
View
B+
Retailer 11
-
£32,332 GBP
View
Most Expensive
B+
The Diamond Guys
1999212293 · Nov 6
£32,332 GBP
$43,516 USD
View
11 more retailers have this diamond
Prices start from £25,848 GBPSave up to £6,484 GBP

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
£25,848 GBP