Round|Natural|GIA

3.03ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1555895832

Certificate GIA 1555895832

Diamond specifications and retailer prices

From £18,300 GBP
$24,520 USD
As of October 31, 2026
Save £11,538 GBP (39%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £29,838 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 1555895832. Listed at 9 retailers as of October 31, 2026, with prices from £18,300 to £29,838, a £11,538 spread on the same certified stone. MOH London lists it at £29,838. 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
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1555895832
Dimensions9.21 × 9.15 × 5.74 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Feather, Crystal, Needle, Natural
Top View
9.21 mm9.15 mm3.03 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555895832
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £29,838 GBP|Low: £18,300 GBP|High: £30,663 GBP|Avg: £22,030 GBP|-2.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 4£18,300 GBP
Retailer 5£19,550 GBP
Retailer 3£20,509 GBP
Retailer 2£20,920 GBP
MOH London£29,838 GBP

36 data points across 5 retailers

9 retailers£18,300 GBP to £29,838 GBP

B+
Cheapest Retailer
-
£18,300 GBP
$24,520 USD
Retailer 2
-
£19,550 GBP
A$40,300 AUD
View
Price last confirmed 29 days ago
Retailer 3
-
£20,208 GBP
$27,077 USD
View
Price last confirmed 36 days ago
B+
Retailer 4
-
£20,509 GBP
$27,480 USD
View
B+
Retailer 5
-
£20,920 GBP
View
Retailer 6
-
£22,484 GBP
$30,126 USD
View
Price last confirmed 33 days ago
Retailer 7
-
£22,846 GBP
$30,611 USD
View
Price last confirmed 26 days ago
Retailer 8
-
£23,198 GBP
$31,083 USD
View
Price last confirmed 39 days ago
Most Expensive
B
MOH London
799459F82 · Nov 1
£29,838 GBP
View
8 more retailers have this diamond
Prices start from £18,300 GBPSave up to £11,538 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
£18,300 GBP