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Round|Natural|GIA

1.51ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 7521240383

Certificate GIA 7521240383

Diamond specifications and retailer prices

From £4,381 GBP
$5,870 USD
As of October 31, 2026
Save £4,499 GBP (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £9,362 GBP at NZ Jewellers · As of September 21, 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 7521240383. Listed at 15 retailers as of October 30, 2026, with a 103% 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 angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7521240383
Dimensions7.30 × 7.26 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.30 mm7.26 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7521240383
Side View
Table 57.0%Crown 35.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.9%

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: £8,880 GBP|Low: £4,381 GBP|High: £8,880 GBP|Avg: £5,760 GBP
NZ Jewellers
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
October 30, 2026
Retailer 4£4,381 GBP
Retailer 7£4,487 GBP
Retailer 12£4,593 GBP
Retailer 6£4,807 GBP
Retailer 9£4,946 GBP
Retailer 8£5,106 GBP
Retailer 13£5,123 GBP
Retailer 5£5,396 GBP
Retailer 11£5,396 GBP
Retailer 14£5,575 GBP
Retailer 2£5,801 GBP
Retailer 3£7,773 GBP
Retailer 10£7,864 GBP
NZ Jewellers£8,880 GBP

38 data points across 14 retailers

15 retailers£4,381 GBP to £8,880 GBP

A
Cheapest Retailer
-
£4,381 GBP
$5,870 USD
A
Retailer 2
-
£4,487 GBP
CA$8,351 CAD
View
A
Retailer 3
-
£4,593 GBP
$6,154 USD
View
A
Retailer 4
-
£4,807 GBP
SGD 8,704 SGD
View
A
Retailer 5
-
£4,946 GBP
$6,627 USD
View
A
Retailer 6
-
£5,106 GBP
View
A
Retailer 7
-
£5,123 GBP
$6,864 USD
View
B+
Retailer 8
-
£5,396 GBP
$7,230 USD
View
B+
Retailer 9
-
£5,396 GBP
$7,230 USD
View
B+
Retailer 10
-
£5,575 GBP
$7,470 USD
View
B+
Retailer 11
-
£5,801 GBP
€7,403 EUR
View
B
Retailer 12
-
£7,773 GBP
$10,414 USD
View
B
Retailer 13
-
£7,864 GBP
View
B
Retailer 14
-
£8,880 GBP
$11,898 USD
View
Most Expensive
NZ Jewellers
2da3d894-812d-4f15-93a8-77e8c8b89583 · Sep 21
£9,362 GBP
$12,544 USD
View
Price last confirmed 39 days ago
14 more retailers have this diamond
Prices start from £4,381 GBPSave up to £4,499 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
£4,381 GBP