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Radiant|Natural|GIA

1.51ct H SI2 Radiant Natural Diamond

ID • H/SI2 • GIA 7551461310

Certificate GIA 7551461310

Diamond specifications and retailer prices

From £2,985 GBP
As of November 2, 2026
Save £2,168 GBP (42%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £5,316 GBP at NZ Jewellers · As of October 18, 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 7551461310. Listed at 12 retailers as of November 2, 2026, with a 73% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551461310
Dimensions7.53 × 5.52 × 3.91 mm
L/W Ratio1.36
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
7.53 mm5.52 mm1.51 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551461310
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 70.8%

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: Nov 2
Current: £2,985 GBP|Low: £2,127 GBP|High: £5,181 GBP|Avg: £3,219 GBP|+0.7%
Retailer 1
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
November 2, 2026
Retailer 13£2,418 GBP
Retailer 4£2,478 GBP
Retailer 2£2,552 GBP
Retailer 3£2,765 GBP
Retailer 14£2,765 GBP
Retailer 1£2,985 GBP
Retailer 10£3,152 GBP
Retailer 11£3,152 GBP
Retailer 12£3,256 GBP
Retailer 7£3,486 GBP
Retailer 9£3,487 GBP
Retailer 6£3,494 GBP
Retailer 5£3,629 GBP
Retailer 8£5,153 GBP

38 data points across 14 retailers

12 retailers£2,985 GBP to £5,153 GBP

Retailer 1
-
£2,418 GBP
$3,245 USD
Price last confirmed 14 days ago
Retailer 2
-
£2,765 GBP
$3,710 USD
View
Price last confirmed 13 days ago
Retailer 3
-
£2,871 GBP
$3,853 USD
View
Price last confirmed 16 days ago
A
Retailer 4
-
£2,985 GBP
View
A
Retailer 5
-
£3,138 GBP
$4,211 USD
View
A
Retailer 6
-
£3,152 GBP
$4,230 USD
View
A
Retailer 7
-
£3,152 GBP
$4,230 USD
View
Retailer 8
-
£3,190 GBP
$4,281 USD
View
Price last confirmed 14 days ago
A
Retailer 9
-
£3,256 GBP
$4,370 USD
View
A
Retailer 10
-
£3,486 GBP
€4,455 EUR
View
B+
Retailer 11
-
£5,153 GBP
View
Most Expensive
NZ Jewellers
40e17ac5-537e-4093-884e-eb953dbc55d5 · Oct 18
£5,316 GBP
$7,134 USD
View
Price last confirmed 15 days ago
11 more retailers have this diamond
Prices start from £2,985 GBPSave up to £2,168 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
£2,985 GBP