Round|Natural|GIA

3.03ct G SI1 Round Natural Diamond

EX • G/SI1

Diamond specifications and retailer prices

From £19,702 GBP
$26,398 USD
As of October 31, 2026
Save £13,909 GBP (41%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £33,611 GBP at Moon Ocean · As of November 1, 2026
View at Moon Ocean

About this 3.03ct natural round diamond

This 3.03ct natural round sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 19 retailers as of October 31, 2026, with prices from £19,702 to £33,611, a £13,909 spread on the same certified stone. Moon Ocean lists it at £33,611. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
Dimensions9.44 × 9.52 × 5.61 mm
L/W Ratio1.01
Top View
9.44 mm9.52 mm3.03 ctG / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateGIA
Side View
Table 65.0%CrownGirdle: Very ThinPavilionCulet: NoneDepth 59.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £33,611 GBP|Low: £19,464 GBP|High: £34,038 GBP|Avg: £24,132 GBP|-0.1%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 8£19,702 GBP
Retailer 12£21,415 GBP
Retailer 2£21,624 GBP
Retailer 6£21,722 GBP
Retailer 7£22,626 GBP
Retailer 9£22,808 GBP
Retailer 4£23,123 GBP
Retailer 10£23,532 GBP
Retailer 3£23,809 GBP
Retailer 11£24,437 GBP
Retailer 5£25,753 GBP
Retailer 13£26,557 GBP
Moon Ocean£33,611 GBP

29 data points across 13 retailers

19 retailers£19,702 GBP to £33,611 GBP

Retailer 1
-
£19,552 GBP
$26,197 USD
Price last confirmed 14 days ago
A
Retailer 2
-
£19,702 GBP
$26,398 USD
View
B+
Retailer 3
-
£21,415 GBP
CA$39,852 CAD
View
B+
Retailer 4
-
£21,624 GBP
$28,974 USD
View
Retailer 5
-
£21,722 GBP
$29,105 USD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
£21,722 GBP
$29,105 USD
View
B+
Retailer 7
-
£22,626 GBP
$30,317 USD
View
Retailer 8
-
£22,626 GBP
$30,317 USD
View
Price last confirmed 52 days ago
Retailer 9
-
£22,626 GBP
$30,317 USD
View
Price last confirmed 22 days ago
B+
Retailer 10
-
£22,808 GBP
$30,560 USD
View
Retailer 11
-
£23,532 GBP
$31,530 USD
View
Price last confirmed 52 days ago
Retailer 12
-
£23,532 GBP
$31,530 USD
View
Price last confirmed 23 days ago
B+
Retailer 13
-
£23,532 GBP
$31,530 USD
View
B+
Retailer 14
-
£23,809 GBP
$31,902 USD
View
Retailer 15
-
£24,437 GBP
$32,743 USD
View
Price last confirmed 52 days ago
Retailer 16
-
£24,437 GBP
$32,743 USD
View
Price last confirmed 21 days ago
B+
Retailer 17
-
£24,437 GBP
$32,743 USD
View
B+
Retailer 18
-
£26,557 GBP
$35,583 USD
View
Most Expensive
B
Moon Ocean
NVN-751523D3D-636 · Nov 1
£33,611 GBP
View
18 more retailers have this diamond
Prices start from £19,702 GBPSave up to £13,909 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.

A
3.03ct Round
£19,702 GBP