Round|Natural|GIA

3.06ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 3555403959

Certificate GIA 3555403959

Diamond specifications and retailer prices

From £19,227 GBP
CA$35,780 CAD
As of October 30, 2026
Save £12,342 GBP (39%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £31,569 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 3.06ct natural round diamond

This 3.06ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555403959. Listed at 20 retailers as of October 30, 2026, with prices from £19,227 to £31,569, a £12,342 spread on the same certified stone. MOH London lists it at £31,569. 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

3.06
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 3555403959
Dimensions9.37 × 9.30 × 5.70 mm
L/W Ratio1.01
Star length50%
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
9.37 mm9.30 mm3.06 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555403959
Side View
Table 58.0%Crown 34°Girdle: MediumPavilion 41°Culet: NoneDepth 61.1%

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 30
Current: £31,569 GBP|Low: £19,227 GBP|High: £33,336 GBP|Avg: £23,158 GBP|-5.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 10£19,227 GBP
Retailer 13£19,347 GBP
Retailer 12£20,554 GBP
Retailer 2£20,602 GBP
Retailer 3£21,080 GBP
Retailer 7£21,203 GBP
Retailer 8£21,340 GBP
Retailer 15£21,376 GBP
Retailer 4£22,621 GBP
Retailer 5£23,280 GBP
Retailer 16£23,397 GBP
Retailer 9£23,835 GBP
Retailer 14£23,842 GBP
Retailer 11£24,056 GBP
Retailer 6£26,770 GBP
MOH London£31,569 GBP

29 data points across 16 retailers

20 retailers£19,227 GBP to £31,569 GBP

B+
Cheapest Retailer
-
£19,227 GBP
CA$35,780 CAD
B+
Retailer 2
-
£19,347 GBP
$25,923 USD
View
B+
Retailer 3
-
£20,554 GBP
$27,540 USD
View
B+
Retailer 4
-
£20,602 GBP
View
B+
Retailer 5
-
£21,056 GBP
$28,213 USD
View
Retailer 6
-
£21,080 GBP
A$43,453 AUD
View
Price last confirmed 33 days ago
Retailer 7
-
£21,203 GBP
$28,410 USD
View
Price last confirmed 24 days ago
B
Retailer 8
-
£21,376 GBP
$28,642 USD
View
Retailer 9
-
£21,969 GBP
$29,436 USD
View
Price last confirmed 48 days ago
Retailer 10
-
£21,969 GBP
$29,436 USD
View
Price last confirmed 35 days ago
Retailer 11
-
£23,397 GBP
View
Price last confirmed 24 days ago
B
Retailer 12
-
£23,835 GBP
€30,416 EUR
View
B
Retailer 13
-
£23,842 GBP
$31,946 USD
View
B
Retailer 14
-
£24,056 GBP
$32,233 USD
View
Retailer 15
-
£24,444 GBP
$32,752 USD
View
Price last confirmed 33 days ago
Retailer 16
-
£25,220 GBP
$33,792 USD
View
Price last confirmed 34 days ago
Retailer 17
-
£26,190 GBP
$35,092 USD
View
Price last confirmed 47 days ago
Retailer 18
-
£26,190 GBP
$35,092 USD
View
Price last confirmed 33 days ago
Retailer 19
-
£26,770 GBP
ZAR 579,454 ZAR
View
Price last confirmed 37 days ago
Most Expensive
B
MOH London
5D0E4A8E8 · Nov 1
£31,569 GBP
View
19 more retailers have this diamond
Prices start from £19,227 GBPSave up to £12,342 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+
3.06ct Round
£19,227 GBP