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Radiant|Natural|GIA

1.03ct K SI1 Radiant Natural Diamond

ID • K/SI1 • GIA 2231920037

Certificate GIA 2231920037

Diamond specifications and retailer prices

From $1,928 AUD
As of November 7, 2026
Save $1,735 AUD (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,877 AUD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.03ct natural radiant diamond

This 1.03ct natural radiant sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2231920037. Listed at 13 retailers as of November 1, 2026, with a 90% 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

1.03
Carat
K
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2231920037
Dimensions6.50 × 4.99 × 3.51 mm
L/W Ratio1.30
Culet sizeNone
Key to symbols
Twinning Wisp, Needle
Top View
6.50 mm4.99 mm1.03 ctK / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2231920037
Side View
Table 68.0%CrownGirdlePavilionCulet: NoneDepth 70.3%

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 7
Current: $2,206 AUD|Low: $1,928 AUD|High: $3,707 AUD|Avg: $2,457 AUD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 7$1,928 AUD
Retailer 2$1,940 AUD
Retailer 6$2,000 AUD
Retailer 1$2,206 AUD
Retailer 4$2,441 AUD
Retailer 3$2,773 AUD
Retailer 5$3,663 AUD

38 data points across 7 retailers

13 retailers$1,928 AUD to $3,663 AUD

A
Cheapest Retailer
-
$1,928 AUD
A
Retailer 2
-
$1,940 AUD
View
Retailer 3
-
$2,000 AUD
View
Price last confirmed 30 days ago
Retailer 4
-
$2,000 AUD
View
Price last confirmed 30 days ago
Retailer 5
-
$2,000 AUD
View
Price last confirmed 13 days ago
Retailer 6
-
$2,091 AUD
View
Price last confirmed 37 days ago
A
Retailer 7
-
$2,206 AUD
View
Retailer 8
-
$2,244 AUD
View
Price last confirmed 67 days ago
Retailer 9
-
$2,307 AUD
View
Price last confirmed 39 days ago
B+
Retailer 10
-
$2,441 AUD
View
B+
Retailer 11
-
$2,773 AUD
View
B
Retailer 12
-
$3,663 AUD
View
Most Expensive
NZ Jewellers
1d75307d-50ea-46b7-9542-c604b043400e · Sep 29
$4,877 AUD
$3,351 USD
View
Price last confirmed 38 days ago
12 more retailers have this diamond
Prices start from $1,928 AUDSave up to $1,735 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
1.03ct Radiant
$1,928 AUD