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Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 2245001864

Certificate GIA 2245001864

Diamond specifications and retailer prices

From £4,412 GBP
$5,876 USD
As of October 28, 2026
Save £4,002 GBP (48%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £10,635 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245001864. Listed at 23 retailers as of October 28, 2026, with a 91% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2245001864
Dimensions7.57 × 5.59 × 3.79 mm
L/W Ratio1.35
Girdle conditionPolished
Top View
7.57 mm5.59 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245001864
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.8%

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 28
Current: £5,389 GBP|Low: £4,412 GBP|High: £8,740 GBP|Avg: £5,542 GBP|-0.5%
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
Retailer 17
Retailer 18
Retailer 19
October 29, 2026
Retailer 17£4,412 GBP
Retailer 8£4,421 GBP
Retailer 4£4,708 GBP
Retailer 3£4,777 GBP
Retailer 14£4,891 GBP
Retailer 6£4,925 GBP
Retailer 18£4,973 GBP
Retailer 12£4,981 GBP
Retailer 10£5,021 GBP
Retailer 7£5,031 GBP
Retailer 9£5,189 GBP
Retailer 5£5,225 GBP
Retailer 1£5,389 GBP
Retailer 13£5,758 GBP
Retailer 11£5,784 GBP
Retailer 2£6,391 GBP
Retailer 16£6,551 GBP
Retailer 19£7,312 GBP
Retailer 15£8,414 GBP

22 data points across 19 retailers

23 retailers£4,412 GBP to £8,414 GBP

A
Cheapest Retailer
-
£4,412 GBP
$5,876 USD
A
Retailer 2
-
£4,421 GBP
HK$46,000 HKD
View
A
Retailer 3
-
£4,708 GBP
$6,269 USD
View
A
Retailer 4
-
£4,777 GBP
$6,362 USD
View
A
Retailer 5
-
£4,891 GBP
$6,513 USD
View
A
Retailer 6
-
£4,925 GBP
A$10,091 AUD
View
A
Retailer 7
-
£4,973 GBP
$6,623 USD
View
A
Retailer 8
-
£4,981 GBP
€6,317 EUR
View
A
Retailer 9
-
£5,021 GBP
$6,686 USD
View
Final sale: no returns
A
Retailer 10
-
£5,031 GBP
$6,700 USD
View
A
Retailer 11
-
£5,072 GBP
SGD 9,128 SGD
View
Price last confirmed 21 days ago
A
Retailer 12
-
£5,189 GBP
$6,910 USD
View
A
Retailer 13
-
£5,225 GBP
$6,958 USD
View
A
Retailer 14
-
£5,389 GBP
View
A
Retailer 15
-
£5,677 GBP
$7,560 USD
View
Price last confirmed 21 days ago
A
Retailer 16
-
£5,758 GBP
$7,668 USD
View
A
Retailer 17
-
£5,784 GBP
A$11,850 AUD
View
Price last confirmed 7 days ago
B+
Retailer 18
-
£5,871 GBP
A$12,028 AUD
View
B+
Retailer 19
-
£6,391 GBP
$8,510 USD
View
B+
Retailer 20
-
£6,551 GBP
€8,309 EUR
View
B+
Retailer 21
-
£7,312 GBP
ZAR 157,302 ZAR
View
B+
Retailer 22
-
£8,414 GBP
View
Most Expensive
B
NZ Jewellers
d72e9f87-f2b0-40af-9c57-de40d7e9850d · Sep 21
£10,635 GBP
$14,162 USD
View
Price last confirmed 38 days ago
22 more retailers have this diamond
Prices start from £4,412 GBPSave up to £4,002 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
£4,412 GBP