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Round|Natural|GIA

3.18ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 6131081960

Certificate GIA 6131081960

Diamond specifications and retailer prices

From £20,252 GBP
$27,135 USD
As of October 25, 2026
Save £16,359 GBP (45%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £36,610 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3.18ct natural round diamond

This 3.18ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 6131081960. Listed at 5 retailers as of October 25, 2026, with prices from £20,252 to £36,610, a £16,359 spread on the same certified stone. MOH London lists it at £36,610. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.18
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6131081960
Dimensions9.20 × 9.17 × 5.89 mm
L/W Ratio1.00
Top View
9.20 mm9.17 mm3.18 ctJ / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6131081960
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 64.1%

Caratlytics Score

How it works →
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: £36,610 GBP|Low: £20,252 GBP|High: £36,855 GBP|Avg: £25,504 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 4£20,252 GBP
Retailer 5£21,134 GBP
Retailer 2£23,105 GBP
Retailer 3£28,366 GBP
MOH London£36,610 GBP

37 data points across 5 retailers

5 retailers£20,252 GBP to £36,610 GBP

B+
Cheapest Retailer
-
£20,252 GBP
$27,135 USD
B
Retailer 2
-
£21,134 GBP
$28,317 USD
View
B
Retailer 3
-
£23,105 GBP
View
B
Retailer 4
-
£28,366 GBP
€36,197 EUR
View
Most Expensive
C
MOH London
19C478429 · Oct 29
£36,610 GBP
View
4 more retailers have this diamond
Prices start from £20,252 GBPSave up to £16,359 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+
3.18ct Round
£20,252 GBP