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Radiant|Natural|GIA

1.51ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 2231970730

Certificate GIA 2231970730

Diamond specifications and retailer prices

From $6,203 AUD
As of November 2, 2026
4 retailers carry this diamond
Most expensive: $9,894 AUD at MOH London · As of October 19, 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 I 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 2231970730. Listed at 4 retailers as of November 2, 2026. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle62.03°
OriginNatural
Grading LabGIA
CertificateGIA 2231970730
Dimensions7.79 × 5.73 × 3.87 mm
L/W Ratio1.36
Key to symbols
Crystal, Feather, Needle
Top View
7.79 mm5.73 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2231970730
Side View
Table 65.0%CrownGirdle: ThickPavilion 62.03°Culet: NoneDepth 67.5%

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 2
Current: $9,894 AUD|Low: $4,310 AUD|High: $10,228 AUD|Avg: $6,584 AUD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 19, 2026
Retailer 2$4,310 AUD
Retailer 4$5,485 AUD
Retailer 5$6,203 AUD
Retailer 3$6,294 AUD
MOH London$9,894 AUD

16 data points across 5 retailers

4 retailers

Retailer 1
-
$4,310 AUD
HK$23,600 HKD
Price last confirmed 11 days ago
Retailer 2
-
$5,485 AUD
SGD 5,195 SGD
View
Price last confirmed 14 days ago
A
Retailer 3
-
$6,203 AUD
View
Most Expensive
MOH London
D6FEF7D0C · Oct 19
$9,894 AUD
£5,460 GBP
View
Price last confirmed 14 days ago
3 more retailers have this diamond
Prices start from $6,203 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
$6,203 AUD