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Radiant|Natural|GIA

1.51ct I SI2 Radiant Natural Diamond

VG • I/SI2 • GIA 1417166339

Certificate GIA 1417166339

Diamond specifications and retailer prices

From £5,833 GBP
$7,827 USD
As of November 1, 2026
Save £6,696 GBP (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £12,529 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1417166339. Listed at 19 retailers as of October 30, 2026, with prices from £5,833 to £12,529, a £6,696 spread on the same certified stone. NZ Jewellers lists it at £12,529. 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
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1417166339
Dimensions7.69 × 6.01 × 4.03 mm
L/W Ratio1.28
Culet sizeNone
Top View
7.69 mm6.01 mm1.51 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1417166339
Side View
Table 73.0%CrownGirdle: ETN-VTKPavilionCulet: NoneDepth 67.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £12,529 GBP|Low: £5,585 GBP|High: £12,529 GBP|Avg: £7,911 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 5£5,585 GBP
Retailer 8£6,264 GBP
Retailer 7£6,786 GBP
Retailer 3£6,831 GBP
Retailer 6£6,891 GBP
Retailer 2£7,781 GBP
Retailer 9£7,830 GBP
Retailer 10£8,246 GBP
Retailer 4£9,784 GBP
NZ Jewellers£12,529 GBP

42 data points across 10 retailers

19 retailers£5,833 GBP to £12,529 GBP

Retailer 1
-
£5,585 GBP
$7,495 USD
Price last confirmed 12 days ago
B
Retailer 2
-
£5,833 GBP
$7,827 USD
View
B
Retailer 3
-
£5,856 GBP
A$12,089 AUD
View
B
Retailer 4
-
£5,865 GBP
$7,871 USD
View
B
Retailer 5
-
£6,111 GBP
CA$11,389 CAD
View
B
Retailer 6
-
£6,264 GBP
$8,406 USD
View
B
Retailer 7
-
£6,786 GBP
$9,107 USD
View
B
Retailer 8
-
£6,831 GBP
View
B
Retailer 9
-
£6,891 GBP
$9,247 USD
View
B
Retailer 10
-
£6,956 GBP
$9,335 USD
View
B
Retailer 11
-
£7,205 GBP
$9,669 USD
View
B
Retailer 12
-
£7,407 GBP
$9,940 USD
View
B
Retailer 13
-
£7,407 GBP
$9,940 USD
View
C
Retailer 14
-
£7,661 GBP
$10,280 USD
View
B
Retailer 15
-
£7,781 GBP
€9,944 EUR
View
C
Retailer 16
-
£7,830 GBP
$10,508 USD
View
Retailer 17
-
£8,246 GBP
$11,066 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
£9,784 GBP
View
Most Expensive
C
NZ Jewellers
55a9718c-2954-4ea8-9041-f0b92c50128e · Oct 30
£12,529 GBP
$16,813 USD
View
18 more retailers have this diamond
Prices start from £5,833 GBPSave up to £6,696 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
£5,833 GBP