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Radiant|Natural|GIA

1.01ct D SI1 Radiant Natural Diamond

ID • D/SI1 • GIA 2557812240

Certificate GIA 2557812240

Diamond specifications and retailer prices

From $3,426 AUD
As of November 6, 2026
Save $3,326 AUD (49%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,326 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.01ct natural radiant diamond

This 1.01ct 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 2557812240. Listed at 16 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

1.01
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle52.31°
Pavilion angle30.09°
OriginNatural
Grading LabGIA
CertificateGIA 2557812240
Dimensions4.69 × 7.12 × 3.22 mm
L/W Ratio1.52
Culet sizeNone
Key to symbols
Crystal, Cloud, Knot, Feather, Needle
Top View
4.69 mm7.12 mm1.01 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557812240
Side View
Table 67.0%Crown 52.31°Girdle: STK-THKPavilion 30.09°Culet: NoneDepth 68.7%

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 6
Current: $3,464 AUD|Low: $2,870 AUD|High: $7,062 AUD|Avg: $4,283 AUD|-11.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 5$3,426 AUD
Retailer 1$3,464 AUD
Retailer 4$3,531 AUD
Retailer 8$3,655 AUD
Retailer 2$3,857 AUD
Retailer 10$3,982 AUD
Retailer 3$4,049 AUD
Retailer 7$4,069 AUD
Retailer 9$4,462 AUD
Retailer 6$6,752 AUD

45 data points across 10 retailers

16 retailers$3,426 AUD to $6,752 AUD

A
Cheapest Retailer
-
$3,426 AUD
A
Retailer 2
-
$3,464 AUD
View
A
Retailer 3
-
$3,531 AUD
View
Final sale: no returns
A
Retailer 4
-
$3,655 AUD
View
A
Retailer 5
-
$3,857 AUD
View
Retailer 6
-
$3,982 AUD
View
Price last confirmed 37 days ago
Retailer 7
-
$3,982 AUD
View
Price last confirmed 22 days ago
A
Retailer 8
-
$4,049 AUD
View
B+
Retailer 9
-
$4,069 AUD
View
Retailer 10
-
$4,136 AUD
View
Price last confirmed 38 days ago
Retailer 11
-
$4,462 AUD
View
Price last confirmed 31 days ago
Retailer 12
-
$4,595 AUD
View
Price last confirmed 62 days ago
Retailer 13
-
$4,595 AUD
View
Price last confirmed 39 days ago
Retailer 14
-
$4,595 AUD
View
Price last confirmed 53 days ago
B
Retailer 15
-
$6,752 AUD
View
Most Expensive
NZ Jewellers
8745b152-c77d-4b17-94a5-a33cef344093 · Sep 30
$8,326 AUD
$5,721 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from $3,426 AUDSave up to $3,326 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
1.01ct Radiant
$3,426 AUD