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Radiant|Natural|GIA

1.03ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 2557530414

Certificate GIA 2557530414

Diamond specifications and retailer prices

From $3,551 AUD
As of November 2, 2026
Save $2,829 AUD (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,740 AUD at NZ Jewellers · As of September 20, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557530414. Listed at 10 retailers as of November 1, 2026, with a 80% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle49.07°
Pavilion angle36.66°
OriginNatural
Grading LabGIA
CertificateGIA 2557530414
Dimensions6.62 × 5.10 × 3.44 mm
L/W Ratio1.30
Girdle conditionThick
Key to symbols
Crystal, Feather, Pinpoint, Natural
Top View
6.62 mm5.10 mm1.03 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2557530414
Side View
Table 69.0%Crown 49.07°GirdlePavilion 36.66°CuletDepth 67.5%

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 2
Current: $3,551 AUD|Low: $3,550 AUD|High: $6,565 AUD|Avg: $4,431 AUD|-2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 1$3,551 AUD
Retailer 3$3,617 AUD
Retailer 4$3,784 AUD
Retailer 5$4,120 AUD
Retailer 6$4,385 AUD
Retailer 2$6,380 AUD

38 data points across 6 retailers

10 retailers$3,551 AUD to $6,380 AUD

A
Cheapest Retailer
-
$3,551 AUD
A
Retailer 2
-
$3,617 AUD
View
Retailer 3
-
$3,678 AUD
View
Price last confirmed 31 days ago
Retailer 4
-
$3,703 AUD
View
Price last confirmed 46 days ago
A
Retailer 5
-
$3,784 AUD
View
Retailer 6
-
$3,873 AUD
View
Price last confirmed 37 days ago
Retailer 7
-
$4,120 AUD
View
Price last confirmed 31 days ago
B
Retailer 8
-
$6,380 AUD
View
Retailer 9
-
$7,690 AUD
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
683dc606-823f-43ad-9eb8-a75935b11463 · Sep 20
$7,740 AUD
$5,318 USD
View
Price last confirmed 47 days ago
9 more retailers have this diamond
Prices start from $3,551 AUDSave up to $2,829 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
$3,551 AUD