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Round|Natural|GIA

3.12ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2484226945

Certificate GIA 2484226945

Diamond specifications and retailer prices

From £18,550 GBP
$24,855 USD
As of October 25, 2026
Save £14,917 GBP (45%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £33,467 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3.12ct natural round diamond

This 3.12ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2484226945. Listed at 7 retailers as of October 25, 2026, with prices from £18,550 to £33,467, a £14,917 spread on the same certified stone. MOH London lists it at £33,467. 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2484226945
Dimensions9.37 × 9.36 × 5.76 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
9.37 mm9.36 mm3.12 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2484226945
Side View
Table 60.0%Crown 35.5°Girdle: ThickPavilion 41.2°Culet: NoneDepth 61.5%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: £33,467 GBP|Low: £18,550 GBP|High: £33,690 GBP|Avg: £23,822 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 4£18,550 GBP
Retailer 5£19,107 GBP
Retailer 2£21,515 GBP
Retailer 3£24,569 GBP
MOH London£33,467 GBP

39 data points across 5 retailers

7 retailers£18,550 GBP to £33,467 GBP

B+
Cheapest Retailer
-
£18,550 GBP
$24,855 USD
B+
Retailer 2
-
£20,080 GBP
CA$37,369 CAD
View
B+
Retailer 3
-
£21,515 GBP
View
B
Retailer 4
-
£23,393 GBP
$31,344 USD
View
B
Retailer 5
-
£24,569 GBP
€31,352 EUR
View
B
Retailer 6
-
£24,901 GBP
$33,364 USD
View
Most Expensive
B
MOH London
7B04EAEF3 · Oct 29
£33,467 GBP
View
6 more retailers have this diamond
Prices start from £18,550 GBPSave up to £14,917 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.

B+
3.12ct Round
£18,550 GBP