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Radiant|Natural|GIA

1.30ct H SI1 Radiant Natural Diamond

ID • H/SI1 • GIA 1232773172

Certificate GIA 1232773172

Diamond specifications and retailer prices

From $5,663 AUD
As of November 5, 2026
Save $5,506 AUD (49%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $12,250 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.3ct natural radiant diamond

This 1.3ct natural radiant sits in the one-and-a-quarter to one-and-a-half 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 1232773172. Listed at 17 retailers as of November 4, 2026, with a 97% 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

1.30
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.78°
Pavilion angle33.25°
OriginNatural
Grading LabGIA
CertificateGIA 1232773172
Dimensions6.82 × 5.38 × 3.80 mm
L/W Ratio1.27
Girdle conditionVery Thick
Key to symbols
Crystal, Cloud, Feather, Needle, Indented Natural
Top View
6.82 mm5.38 mm1.30 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232773172
Side View
Table 69.0%Crown 45.78°Girdle: ThickPavilion 33.25°Culet: NoneDepth 70.6%

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: $6,923 AUD|Low: $5,663 AUD|High: $11,333 AUD|Avg: $7,575 AUD|+7.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 11$5,663 AUD
Retailer 2$6,334 AUD
Retailer 1$6,923 AUD
Retailer 7$7,030 AUD
Retailer 10$7,030 AUD
Retailer 8$7,088 AUD
Retailer 9$7,262 AUD
Retailer 3$7,765 AUD
Retailer 4$7,912 AUD
Retailer 5$8,578 AUD
Retailer 6$11,169 AUD

43 data points across 11 retailers

17 retailers$5,663 AUD to $11,169 AUD

A
Cheapest Retailer
-
$5,663 AUD
B+
Retailer 2
-
$5,990 AUD
View
B+
Retailer 3
-
$6,334 AUD
View
Retailer 4
-
$6,370 AUD
View
Price last confirmed 26 days ago
Retailer 5
-
$6,370 AUD
View
Price last confirmed 38 days ago
Retailer 6
-
$6,370 AUD
View
Price last confirmed 30 days ago
B+
Retailer 7
-
$6,923 AUD
View
B
Retailer 8
-
$7,030 AUD
View
B+
Retailer 9
-
$7,030 AUD
View
Retailer 10
-
$7,088 AUD
View
Price last confirmed 29 days ago
B
Retailer 11
-
$7,262 AUD
View
Retailer 12
-
$7,350 AUD
View
Price last confirmed 29 days ago
Retailer 13
-
$7,765 AUD
View
Price last confirmed 25 days ago
B+
Retailer 14
-
$7,912 AUD
View
B
Retailer 15
-
$8,578 AUD
View
B
Retailer 16
-
$11,169 AUD
View
Most Expensive
NZ Jewellers
7f9d13f4-aa2c-4ee2-b436-84882db56911 · Sep 30
$12,250 AUD
$8,417 USD
View
Price last confirmed 37 days ago
16 more retailers have this diamond
Prices start from $5,663 AUDSave up to $5,506 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
1.30ct Radiant
$5,663 AUD