Radiant|Natural|GIA

1.51ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 7543765163

Certificate GIA 7543765163

Diamond specifications and retailer prices

From £3,969 GBP
$5,326 USD
As of November 1, 2026
Save £3,673 GBP (48%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £8,401 GBP at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7543765163. Listed at 25 retailers as of October 28, 2026, with a 93% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle46.92°
Pavilion angle29.99°
OriginNatural
Grading LabGIA
CertificateGIA 7543765163
Dimensions7.27 × 5.69 × 3.86 mm
L/W Ratio1.28
Girdle conditionVery Thick
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural, Natural
Top View
7.27 mm5.69 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7543765163
Side View
Table 63.0%Crown 46.92°Girdle: STK-VTKPavilion 29.99°Culet: NoneDepth 67.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £4,733 GBP|Low: £3,850 GBP|High: £7,675 GBP|Avg: £5,404 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 10£3,969 GBP
Retailer 9£4,200 GBP
Retailer 2£4,236 GBP
Retailer 11£4,240 GBP
Retailer 1£4,733 GBP
Retailer 5£4,818 GBP
Retailer 3£4,926 GBP
Retailer 4£5,488 GBP
Retailer 7£6,172 GBP
Retailer 6£7,401 GBP
Retailer 8£7,642 GBP

34 data points across 11 retailers

25 retailers£3,969 GBP to £7,642 GBP

A
Cheapest Retailer
-
£3,969 GBP
$5,326 USD
A
Retailer 2
-
£4,200 GBP
$5,636 USD
View
Final sale: no returns
A
Retailer 3
-
£4,236 GBP
$5,684 USD
View
A
Retailer 4
-
£4,240 GBP
$5,690 USD
View
A
Retailer 5
-
£4,487 GBP
$6,021 USD
View
Retailer 6
-
£4,551 GBP
$6,107 USD
View
Price last confirmed 25 days ago
Retailer 7
-
£4,551 GBP
$6,107 USD
View
Price last confirmed 32 days ago
Retailer 8
-
£4,551 GBP
$6,107 USD
View
Price last confirmed 25 days ago
Retailer 9
-
£4,551 GBP
$6,107 USD
View
Price last confirmed 41 days ago
A
Retailer 10
-
£4,733 GBP
View
A
Retailer 11
-
£4,818 GBP
View
B+
Retailer 12
-
£4,874 GBP
$6,540 USD
View
B+
Retailer 13
-
£4,874 GBP
$6,540 USD
View
Retailer 14
-
£4,926 GBP
A$10,170 AUD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
£5,037 GBP
$6,760 USD
View
B+
Retailer 16
-
£5,142 GBP
$6,900 USD
View
Retailer 17
-
£5,251 GBP
$7,046 USD
View
Price last confirmed 41 days ago
Retailer 18
-
£5,251 GBP
$7,046 USD
View
Price last confirmed 24 days ago
B+
Retailer 19
-
£5,488 GBP
€7,014 EUR
View
Retailer 20
-
£5,538 GBP
$7,431 USD
View
Price last confirmed 18 days ago
B+
Retailer 21
-
£6,172 GBP
ZAR 133,799 ZAR
View
B
Retailer 22
-
£7,401 GBP
View
B
Retailer 23
-
£7,642 GBP
View
Retailer 24
-
£8,401 GBP
$11,274 USD
View
Price last confirmed 33 days ago
Most Expensive
NZ Jewellers
e5c15276-5653-4dca-b6f7-b5f55167e23b · Sep 21
£8,401 GBP
$11,274 USD
View
Price last confirmed 42 days ago
24 more retailers have this diamond
Prices start from £3,969 GBPSave up to £3,673 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 Radiant
£3,969 GBP