CaratHunter
Plans
Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 6243006312

Certificate GIA 6243006312

Diamond specifications and retailer prices

From £5,969 GBP
$7,949 USD
As of October 26, 2026
Save £4,781 GBP (44%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £10,750 GBP at NZ Jewellers · As of October 27, 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 6243006312. Listed at 22 retailers as of October 26, 2026, with prices from £5,969 to £10,750, a £4,781 spread on the same certified stone. NZ Jewellers lists it at £10,750. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6243006312
Dimensions7.69 × 5.69 × 3.85 mm
L/W Ratio1.35
Culet sizeNone
Top View
7.69 mm5.69 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6243006312
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: £10,750 GBP|Low: £5,929 GBP|High: £10,750 GBP|Avg: £7,597 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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 28, 2026
Retailer 5£5,929 GBP
Retailer 4£5,969 GBP
Retailer 11£6,409 GBP
Retailer 15£6,450 GBP
Retailer 10£6,504 GBP
Retailer 7£6,685 GBP
Retailer 19£6,987 GBP
Retailer 12£7,008 GBP
Retailer 16£7,083 GBP
Retailer 17£7,096 GBP
Retailer 8£7,125 GBP
Retailer 2£7,256 GBP
Retailer 3£7,906 GBP
Retailer 9£7,947 GBP
Retailer 6£8,063 GBP
Retailer 13£8,083 GBP
Retailer 18£9,308 GBP
Retailer 14£10,087 GBP
NZ Jewellers£10,750 GBP

32 data points across 19 retailers

22 retailers£5,969 GBP to £10,750 GBP

Retailer 1
-
£5,929 GBP
$7,895 USD
Price last confirmed 9 days ago
B+
Retailer 2
-
£5,969 GBP
$7,949 USD
View
B+
Retailer 3
-
£6,039 GBP
$8,042 USD
View
B+
Retailer 4
-
£6,409 GBP
$8,535 USD
View
B+
Retailer 5
-
£6,450 GBP
$8,590 USD
View
B+
Retailer 6
-
£6,504 GBP
$8,661 USD
View
B+
Retailer 7
-
£6,685 GBP
CA$12,363 CAD
View
B+
Retailer 8
-
£6,876 GBP
$9,157 USD
View
B+
Retailer 9
-
£6,987 GBP
$9,305 USD
View
B+
Retailer 10
-
£7,008 GBP
View
B+
Retailer 11
-
£7,083 GBP
A$14,512 AUD
View
B+
Retailer 12
-
£7,096 GBP
$9,449 USD
View
B
Retailer 13
-
£7,125 GBP
$9,488 USD
View
B+
Retailer 14
-
£7,256 GBP
View
B
Retailer 15
-
£7,906 GBP
$10,528 USD
View
B
Retailer 16
-
£7,947 GBP
$10,583 USD
View
B
Retailer 17
-
£8,063 GBP
$10,737 USD
View
B+
Retailer 18
-
£8,083 GBP
€10,251 EUR
View
Retailer 19
-
£8,490 GBP
$11,306 USD
View
Price last confirmed 7 days ago
Retailer 20
-
£9,308 GBP
ZAR 200,255 ZAR
View
Price last confirmed 7 days ago
B
Retailer 21
-
£10,087 GBP
View
Most Expensive
B
NZ Jewellers
021ade1d-30d8-47bd-ad0e-6c1fc438c237 · Oct 27
£10,750 GBP
$14,316 USD
View
21 more retailers have this diamond
Prices start from £5,969 GBPSave up to £4,781 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.

B+
1.51ct Radiant
£5,969 GBP