CaratHunter
Plans
Radiant|Natural|GIA

1.51ct D SI2 Radiant Natural Diamond

EX • D/SI2 • GIA 6545823175

Certificate GIA 6545823175

Diamond specifications and retailer prices

From £5,626 GBP
$7,538 USD
As of October 30, 2026
Save £6,391 GBP (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £12,017 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545823175. Listed at 14 retailers as of October 30, 2026, with prices from £5,626 to £12,017, a £6,391 spread on the same certified stone. NZ Jewellers lists it at £12,017. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6545823175
Dimensions7.89 × 5.72 × 3.88 mm
L/W Ratio1.38
Top View
7.89 mm5.72 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6545823175
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.9%

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 30
Current: £12,017 GBP|Low: £5,626 GBP|High: £12,017 GBP|Avg: £7,414 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 6£5,626 GBP
Retailer 4£5,903 GBP
Retailer 12£6,009 GBP
Retailer 14£6,059 GBP
Retailer 11£6,509 GBP
Retailer 10£6,609 GBP
Retailer 8£6,653 GBP
Retailer 7£6,904 GBP
Retailer 9£7,284 GBP
Retailer 13£7,510 GBP
Retailer 5£7,513 GBP
Retailer 15£7,910 GBP
Retailer 3£8,565 GBP
Retailer 2£10,013 GBP
NZ Jewellers£12,017 GBP

41 data points across 15 retailers

14 retailers£5,626 GBP to £12,017 GBP

A
Cheapest Retailer
-
£5,626 GBP
$7,538 USD
B+
Retailer 2
-
£5,903 GBP
CA$10,986 CAD
View
B+
Retailer 3
-
£6,009 GBP
$8,051 USD
View
B+
Retailer 4
-
£6,059 GBP
$8,118 USD
View
B+
Retailer 5
-
£6,509 GBP
$8,722 USD
View
B+
Retailer 6
-
£6,609 GBP
$8,856 USD
View
B+
Retailer 7
-
£6,653 GBP
View
B+
Retailer 8
-
£6,904 GBP
$9,251 USD
View
B
Retailer 9
-
£7,118 GBP
$9,538 USD
View
B+
Retailer 10
-
£7,284 GBP
€9,295 EUR
View
B+
Retailer 11
-
£7,510 GBP
$10,063 USD
View
B+
Retailer 12
-
£7,513 GBP
$10,066 USD
View
B
Retailer 13
-
£10,013 GBP
View
Most Expensive
B
NZ Jewellers
ad15a242-6351-421f-8ec9-3852edf42832 · Oct 30
£12,017 GBP
$16,101 USD
View
13 more retailers have this diamond
Prices start from £5,626 GBPSave up to £6,391 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
£5,626 GBP