Round|Natural|GIA

3.03ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2556357915

Certificate GIA 2556357915

Diamond specifications and retailer prices

From £17,126 GBP
$22,947 USD
As of November 1, 2026
Save £12,251 GBP (42%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £29,377 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 3.03ct natural round diamond

This 3.03ct 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 2556357915. Listed at 16 retailers as of November 1, 2026, with prices from £17,126 to £29,377, a £12,251 spread on the same certified stone. MOH London lists it at £29,377. 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

3.03
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556357915
Dimensions9.10 × 9.18 × 5.74 mm
L/W Ratio1.01
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
9.10 mm9.18 mm3.03 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556357915
Side View
Table 58.0%CrownGirdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

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: Nov 1
Current: £29,377 GBP|Low: £15,419 GBP|High: £30,451 GBP|Avg: £19,805 GBP|+3.2%
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
November 1, 2026
Retailer 5£15,419 GBP
Retailer 6£16,764 GBP
Retailer 7£16,998 GBP
Retailer 11£17,126 GBP
Retailer 12£17,129 GBP
Retailer 3£17,444 GBP
Retailer 13£18,315 GBP
Retailer 8£18,819 GBP
Retailer 14£20,002 GBP
Retailer 15£20,002 GBP
Retailer 4£20,666 GBP
Retailer 10£21,161 GBP
Retailer 2£21,950 GBP
Retailer 9£24,385 GBP
MOH London£29,377 GBP

10 data points across 15 retailers

16 retailers£17,126 GBP to £29,377 GBP

Retailer 1
-
£15,419 GBP
HK$161,400 HKD
Price last confirmed 24 days ago
B+
Retailer 2
-
£17,126 GBP
$22,947 USD
View
B+
Retailer 3
-
£17,129 GBP
$22,951 USD
View
B+
Retailer 4
-
£17,444 GBP
$23,373 USD
View
B+
Retailer 5
-
£17,844 GBP
A$36,783 AUD
View
B+
Retailer 6
-
£18,315 GBP
$24,540 USD
View
B+
Retailer 7
-
£18,819 GBP
View
B+
Retailer 8
-
£20,002 GBP
$26,800 USD
View
B+
Retailer 9
-
£20,002 GBP
$26,800 USD
View
B
Retailer 10
-
£20,666 GBP
$27,690 USD
View
B
Retailer 11
-
£21,161 GBP
$28,354 USD
View
Retailer 12
-
£21,794 GBP
$29,201 USD
View
Price last confirmed 40 days ago
B
Retailer 13
-
£21,950 GBP
€28,010 EUR
View
B
Retailer 14
-
£24,385 GBP
ZAR 527,828 ZAR
View
Retailer 15
-
£25,819 GBP
$34,594 USD
View
Price last confirmed 38 days ago
Most Expensive
B
MOH London
4F9F25D6C · Nov 1
£29,377 GBP
View
15 more retailers have this diamond
Prices start from £17,126 GBPSave up to £12,251 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+
3.03ct Round
£17,126 GBP