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Radiant|Natural|GIA

1.51ct H SI2 Radiant Natural Diamond

EX • H/SI2 • GIA 1555953779

Certificate GIA 1555953779

Diamond specifications and retailer prices

From £3,623 GBP
$4,854 USD
As of October 31, 2026
Save £4,335 GBP (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £7,957 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 H 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 1555953779. Listed at 19 retailers as of October 30, 2026, with prices from £3,623 to £7,957, a £4,335 spread on the same certified stone. NZ Jewellers lists it at £7,957. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555953779
Dimensions7.67 × 5.51 × 3.84 mm
L/W Ratio1.39
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Cavity, Feather, Needle
Top View
7.67 mm5.51 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555953779
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.7%

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 31
Current: £7,957 GBP|Low: £3,611 GBP|High: £7,957 GBP|Avg: £4,985 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
Retailer 16
November 2, 2026
Retailer 6£3,623 GBP
Retailer 9£3,756 GBP
Retailer 4£3,796 GBP
Retailer 16£3,978 GBP
Retailer 14£4,310 GBP
Retailer 15£4,310 GBP
Retailer 5£4,544 GBP
Retailer 2£4,608 GBP
Retailer 10£4,609 GBP
Retailer 3£4,851 GBP
Retailer 8£4,851 GBP
Retailer 13£4,974 GBP
Retailer 12£5,199 GBP
Retailer 7£6,962 GBP
Retailer 11£7,009 GBP
NZ Jewellers£7,957 GBP

30 data points across 16 retailers

19 retailers£3,623 GBP to £7,957 GBP

A
Cheapest Retailer
-
£3,623 GBP
$4,854 USD
A
Retailer 2
-
£3,756 GBP
$5,033 USD
View
A
Retailer 3
-
£3,796 GBP
$5,086 USD
View
A
Retailer 4
-
£3,978 GBP
$5,330 USD
View
Final sale: no returns
A
Retailer 5
-
£4,051 GBP
CA$7,539 CAD
View
B+
Retailer 6
-
£4,310 GBP
$5,775 USD
View
B+
Retailer 7
-
£4,310 GBP
$5,775 USD
View
B+
Retailer 8
-
£4,544 GBP
$6,089 USD
View
B+
Retailer 9
-
£4,588 GBP
$6,148 USD
View
B+
Retailer 10
-
£4,608 GBP
View
B+
Retailer 11
-
£4,609 GBP
View
B+
Retailer 12
-
£4,851 GBP
$6,500 USD
View
B+
Retailer 13
-
£4,851 GBP
$6,500 USD
View
B+
Retailer 14
-
£4,974 GBP
$6,664 USD
View
B+
Retailer 15
-
£5,015 GBP
$6,720 USD
View
B+
Retailer 16
-
£5,199 GBP
€6,634 EUR
View
B
Retailer 17
-
£6,962 GBP
$9,328 USD
View
B
Retailer 18
-
£7,009 GBP
View
Most Expensive
B
NZ Jewellers
9ac07ea6-12d9-46ef-8643-3550185b7877 · Oct 30
£7,957 GBP
$10,662 USD
View
18 more retailers have this diamond
Prices start from £3,623 GBPSave up to £4,335 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
£3,623 GBP