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Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 2527321233

Certificate GIA 2527321233

Diamond specifications and retailer prices

From £2,798 GBP
As of November 5, 2026
Save £2,777 GBP (50%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £5,575 GBP at MOH London · As of November 4, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2527321233. Listed at 15 retailers as of November 4, 2026, with prices from £2,798 to £5,575, a £2,777 spread on the same certified stone. MOH London lists it at £5,575. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2527321233
Dimensions6.17 × 6.13 × 4.22 mm
L/W Ratio1.01
Top View
6.17 mm6.13 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2527321233
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £5,575 GBP|Low: £2,422 GBP|High: £5,658 GBP|Avg: £3,636 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 9£2,798 GBP
Retailer 3£2,799 GBP
Retailer 8£2,907 GBP
Retailer 11£3,180 GBP
Retailer 6£3,366 GBP
Retailer 2£3,455 GBP
Retailer 10£3,538 GBP
Retailer 4£3,726 GBP
Retailer 7£3,756 GBP
Retailer 5£4,282 GBP
MOH London£5,575 GBP

44 data points across 11 retailers

15 retailers£2,798 GBP to £5,575 GBP

A
Cheapest Retailer
-
£2,798 GBP
A
Retailer 2
-
£2,799 GBP
View
A
Retailer 3
-
£2,907 GBP
View
Final sale: no returns
A
Retailer 4
-
£3,018 GBP
View
A
Retailer 5
-
£3,165 GBP
View
Retailer 6
-
£3,180 GBP
View
Price last confirmed 13 days ago
A
Retailer 7
-
£3,287 GBP
View
A
Retailer 8
-
£3,366 GBP
View
A
Retailer 9
-
£3,455 GBP
View
Retailer 10
-
£3,538 GBP
View
Price last confirmed 29 days ago
Retailer 11
-
£3,683 GBP
View
Price last confirmed 12 days ago
A
Retailer 12
-
£3,726 GBP
View
A
Retailer 13
-
£3,756 GBP
View
B+
Retailer 14
-
£4,282 GBP
View
Most Expensive
B
MOH London
6C9A6D878 · Nov 4
£5,575 GBP
View
14 more retailers have this diamond
Prices start from £2,798 GBPSave up to £2,777 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
£2,798 GBP