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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 $5,450 AUD
As of November 5, 2026
Save $5,410 AUD (50%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,861 AUD 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 $5,450 to $10,861, a $5,410 spread on the same certified stone. MOH London lists it at $10,861. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $10,861 AUD|Low: $4,718 AUD|High: $11,022 AUD|Avg: $7,083 AUD|-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$5,450 AUD
Retailer 3$5,453 AUD
Retailer 8$5,663 AUD
Retailer 11$6,194 AUD
Retailer 6$6,557 AUD
Retailer 2$6,731 AUD
Retailer 10$6,891 AUD
Retailer 4$7,258 AUD
Retailer 7$7,318 AUD
Retailer 5$8,342 AUD
MOH London$10,861 AUD

44 data points across 11 retailers

15 retailers$5,450 AUD to $10,861 AUD

A
Cheapest Retailer
-
$5,450 AUD
A
Retailer 2
-
$5,453 AUD
View
A
Retailer 3
-
$5,663 AUD
View
Final sale: no returns
A
Retailer 4
-
$5,880 AUD
View
A
Retailer 5
-
$6,165 AUD
View
Retailer 6
-
$6,194 AUD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$6,402 AUD
View
A
Retailer 8
-
$6,557 AUD
View
A
Retailer 9
-
$6,731 AUD
View
Retailer 10
-
$6,891 AUD
View
Price last confirmed 29 days ago
Retailer 11
-
$7,175 AUD
View
Price last confirmed 12 days ago
A
Retailer 12
-
$7,258 AUD
View
A
Retailer 13
-
$7,318 AUD
View
B+
Retailer 14
-
$8,342 AUD
View
Most Expensive
B
MOH London
6C9A6D878 · Nov 4
$10,861 AUD
£5,876 GBP
View
14 more retailers have this diamond
Prices start from $5,450 AUDSave up to $5,410 AUD

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
$5,450 AUD