CaratHunter
Plans
Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 6532464929

Certificate GIA 6532464929

Diamond specifications and retailer prices

From £5,187 GBP
As of November 3, 2026
Save £4,405 GBP (46%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £9,592 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 I 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 6532464929. Listed at 16 retailers as of October 27, 2026, with prices from £5,187 to £9,592, a £4,405 spread on the same certified stone. NZ Jewellers lists it at £9,592. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6532464929
Dimensions7.73 × 5.60 × 3.84 mm
L/W Ratio1.38
Top View
7.73 mm5.60 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6532464929
Side View
Table 67.0%CrownGirdlePavilionCulet: NoneDepth 68.5%

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: Nov 3
Current: £9,592 GBP|Low: £4,853 GBP|High: £9,592 GBP|Avg: £5,889 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 3, 2026
Retailer 7£4,853 GBP
Retailer 6£5,002 GBP
Retailer 2£5,187 GBP
Retailer 5£5,291 GBP
Retailer 3£5,294 GBP
Retailer 12£5,294 GBP
Retailer 9£5,328 GBP
Retailer 4£5,587 GBP
Retailer 15£5,735 GBP
Retailer 14£5,824 GBP
Retailer 10£6,233 GBP
Retailer 13£6,617 GBP
Retailer 8£6,984 GBP
Retailer 11£7,811 GBP
NZ Jewellers£9,592 GBP

39 data points across 15 retailers

16 retailers£5,187 GBP to £9,592 GBP

Retailer 1
-
£4,853 GBP
$6,512 USD
Price last confirmed 7 days ago
Retailer 2
-
£5,002 GBP
$6,712 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
£5,187 GBP
View
Retailer 4
-
£5,291 GBP
$7,100 USD
View
Price last confirmed 6 days ago
Retailer 5
-
£5,294 GBP
$7,104 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£5,328 GBP
View
Retailer 7
-
£5,587 GBP
A$11,534 AUD
View
Price last confirmed 29 days ago
B+
Retailer 8
-
£5,709 GBP
$7,661 USD
View
Retailer 9
-
£5,735 GBP
$7,696 USD
View
Price last confirmed 7 days ago
Retailer 10
-
£5,824 GBP
$7,815 USD
View
Price last confirmed 8 days ago
Retailer 11
-
£5,857 GBP
$7,860 USD
View
Price last confirmed 8 days ago
B
Retailer 12
-
£6,233 GBP
€7,966 EUR
View
Price last confirmed 7 days ago
B
Retailer 13
-
£6,617 GBP
$8,880 USD
View
B
Retailer 14
-
£6,984 GBP
ZAR 151,405 ZAR
View
Retailer 15
-
£7,811 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
NZ Jewellers
ae27c0d4-f803-44aa-b296-c81b4670f206 · Oct 27
£9,592 GBP
$12,872 USD
View
15 more retailers have this diamond
Prices start from £5,187 GBPSave up to £4,405 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
£5,187 GBP