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Radiant|Natural|GIA

1.51ct I SI2 Radiant Natural Diamond

EX • I/SI2 • GIA 6227537173

Certificate GIA 6227537173

Diamond specifications and retailer prices

From £5,130 GBP
$6,884 USD
As of October 30, 2026
Save £5,828 GBP (53%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £10,958 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6227537173. Listed at 18 retailers as of October 30, 2026, with prices from £5,130 to £10,958, a £5,828 spread on the same certified stone. NZ Jewellers lists it at £10,958. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6227537173
Dimensions7.63 × 5.68 × 4.01 mm
L/W Ratio1.34
Top View
7.63 mm5.68 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6227537173
Side View
Table 69.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 70.6%

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 30
Current: £10,958 GBP|Low: £5,130 GBP|High: £10,958 GBP|Avg: £6,737 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
November 1, 2026
Retailer 13£5,130 GBP
Retailer 5£5,197 GBP
Retailer 9£5,479 GBP
Retailer 3£5,525 GBP
Retailer 11£5,935 GBP
Retailer 10£6,027 GBP
Retailer 4£6,052 GBP
Retailer 7£6,056 GBP
Retailer 6£6,391 GBP
Retailer 12£6,849 GBP
Retailer 8£7,159 GBP
Retailer 2£9,131 GBP
NZ Jewellers£10,958 GBP

32 data points across 13 retailers

18 retailers£5,130 GBP to £10,958 GBP

B+
Cheapest Retailer
-
£5,130 GBP
$6,884 USD
B+
Retailer 2
-
£5,197 GBP
$6,974 USD
View
B
Retailer 3
-
£5,479 GBP
$7,352 USD
View
B
Retailer 4
-
£5,525 GBP
$7,414 USD
View
B
Retailer 5
-
£5,836 GBP
$7,832 USD
View
B
Retailer 6
-
£5,935 GBP
$7,965 USD
View
B
Retailer 7
-
£6,027 GBP
$8,088 USD
View
B
Retailer 8
-
£6,052 GBP
$8,121 USD
View
B+
Retailer 9
-
£6,056 GBP
View
B
Retailer 10
-
£6,391 GBP
View
B
Retailer 11
-
£6,453 GBP
$8,660 USD
View
B
Retailer 12
-
£6,453 GBP
$8,660 USD
View
B
Retailer 13
-
£6,669 GBP
$8,950 USD
View
B
Retailer 14
-
£6,849 GBP
$9,191 USD
View
B
Retailer 15
-
£7,159 GBP
€9,150 EUR
View
Retailer 16
-
£7,216 GBP
$9,683 USD
View
Price last confirmed 10 days ago
B
Retailer 17
-
£9,131 GBP
View
Most Expensive
B
NZ Jewellers
aad99454-fecf-44df-9c43-f7e4f1fdefab · Oct 30
£10,958 GBP
$14,705 USD
View
17 more retailers have this diamond
Prices start from £5,130 GBPSave up to £5,828 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
£5,130 GBP