CaratHunter
Plans
Radiant|Natural|GIA

1.51ct J SI2 Radiant Natural Diamond

VG • J/SI2 • GIA 1453307957

Certificate GIA 1453307957

Diamond specifications and retailer prices

From £3,691 GBP
$4,945 USD
As of October 28, 2026
Save £4,367 GBP (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £8,057 GBP at NZ Jewellers · As of October 30, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1453307957. Listed at 18 retailers as of October 28, 2026, with prices from £3,691 to £8,057, a £4,367 spread on the same certified stone. NZ Jewellers lists it at £8,057. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
J
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle35.1°
OriginNatural
Grading LabGIA
CertificateGIA 1453307957
Dimensions7.85 × 5.88 × 3.84 mm
L/W Ratio1.34
Girdle conditionPolished
Top View
7.85 mm5.88 mm1.51 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1453307957
Side View
Table 66.0%CrownGirdle: STK-THKPavilion 35.1°Culet: NoneDepth 65.3%

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 28
Current: £8,057 GBP|Low: £3,492 GBP|High: £8,057 GBP|Avg: £4,758 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
November 1, 2026
Retailer 10£3,691 GBP
Retailer 5£3,764 GBP
Retailer 12£3,806 GBP
Retailer 13£4,029 GBP
Retailer 11£4,062 GBP
Retailer 7£4,232 GBP
Retailer 3£4,365 GBP
Retailer 14£4,365 GBP
Retailer 15£4,365 GBP
Retailer 2£4,583 GBP
Retailer 4£4,656 GBP
Retailer 6£5,036 GBP
Retailer 8£5,265 GBP
Retailer 9£7,135 GBP
NZ Jewellers£8,057 GBP

44 data points across 15 retailers

18 retailers£3,691 GBP to £8,057 GBP

B+
Cheapest Retailer
-
£3,691 GBP
$4,945 USD
B
Retailer 2
-
£3,764 GBP
$5,043 USD
View
B
Retailer 3
-
£3,806 GBP
$5,100 USD
View
B
Retailer 4
-
£4,029 GBP
$5,398 USD
View
Final sale: no returns
B
Retailer 5
-
£4,062 GBP
$5,443 USD
View
B
Retailer 6
-
£4,365 GBP
$5,848 USD
View
B
Retailer 7
-
£4,365 GBP
$5,848 USD
View
B
Retailer 8
-
£4,365 GBP
$5,848 USD
View
B
Retailer 9
-
£4,583 GBP
View
B
Retailer 10
-
£4,656 GBP
A$9,598 AUD
View
B
Retailer 11
-
£4,791 GBP
$6,420 USD
View
B
Retailer 12
-
£4,791 GBP
$6,420 USD
View
B
Retailer 13
-
£4,956 GBP
$6,640 USD
View
B
Retailer 14
-
£5,036 GBP
$6,748 USD
View
B
Retailer 15
-
£5,265 GBP
€6,718 EUR
View
Retailer 16
-
£5,312 GBP
$7,118 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
£7,135 GBP
View
Most Expensive
C
NZ Jewellers
5f9b0cbc-a551-402b-a685-77acf222b159 · Oct 30
£8,057 GBP
$10,796 USD
View
17 more retailers have this diamond
Prices start from £3,691 GBPSave up to £4,367 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
£3,691 GBP