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Round|Natural|GIA

1.51ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 6552995075

Certificate GIA 6552995075

Diamond specifications and retailer prices

From £3,974 GBP
HK$41,600 HKD
As of November 1, 2026
Save £3,852 GBP (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £8,739 GBP at NZ Jewellers · As of September 27, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552995075. Listed at 15 retailers as of November 1, 2026, with a 97% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.51
Carat
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552995075
Dimensions7.25 × 7.29 × 4.54 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.25 mm7.29 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552995075
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.5%

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: Nov 1
Current: £6,082 GBP|Low: £3,788 GBP|High: £7,826 GBP|Avg: £5,111 GBP|-2.7%
Retailer 1
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 1, 2026
Retailer 15£3,974 GBP
Retailer 6£4,022 GBP
Retailer 14£4,197 GBP
Retailer 13£4,206 GBP
Retailer 8£4,426 GBP
Retailer 12£4,442 GBP
Retailer 7£4,823 GBP
Retailer 9£4,935 GBP
Retailer 11£5,060 GBP
Retailer 16£5,351 GBP
Retailer 3£5,433 GBP
Retailer 2£5,576 GBP
Retailer 4£5,612 GBP
Retailer 1£6,082 GBP
Retailer 5£6,123 GBP
Retailer 10£7,826 GBP

24 data points across 16 retailers

15 retailers£3,974 GBP to £7,826 GBP

A
Cheapest Retailer
-
£3,974 GBP
HK$41,600 HKD
A
Retailer 2
-
£4,197 GBP
$5,624 USD
View
A
Retailer 3
-
£4,206 GBP
$5,635 USD
View
A
Retailer 4
-
£4,442 GBP
$5,952 USD
View
Final sale: no returns
A
Retailer 5
-
£4,935 GBP
View
A
Retailer 6
-
£5,060 GBP
View
Retailer 7
-
£5,225 GBP
$7,001 USD
View
Price last confirmed 33 days ago
B+
Retailer 8
-
£5,351 GBP
$7,170 USD
View
B+
Retailer 9
-
£5,433 GBP
$7,280 USD
View
B+
Retailer 10
-
£5,576 GBP
€7,115 EUR
View
B+
Retailer 11
-
£5,612 GBP
$7,520 USD
View
Retailer 12
-
£6,029 GBP
$8,078 USD
View
Price last confirmed 34 days ago
B+
Retailer 13
-
£6,082 GBP
$8,149 USD
View
B
Retailer 14
-
£7,826 GBP
View
Most Expensive
NZ Jewellers
7636fe49-2ea9-4b23-907b-2cc38d964eac · Sep 27
£8,739 GBP
$11,709 USD
View
Price last confirmed 35 days ago
14 more retailers have this diamond
Prices start from £3,974 GBPSave up to £3,852 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
1.51ct Round
£3,974 GBP