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Radiant|Natural|GIA

1.51ct F SI2 Radiant Natural Diamond

EX • F/SI2 • GIA 2557589324

Certificate GIA 2557589324

Diamond specifications and retailer prices

From $8,875 AUD
As of November 5, 2026
Save $1,259 AUD (12%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $16,568 AUD at NZ Jewellers · As of October 9, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557589324. Listed at 14 retailers as of November 5, 2026, with a relatively tight 14% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2557589324
Dimensions7.73 × 5.52 × 3.86 mm
L/W Ratio1.40
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Twinning Wisp, Needle
Top View
7.73 mm5.52 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2557589324
Side View
Table 66.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 70.0%

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 5
Current: $16,568 AUD|Low: $7,826 AUD|High: $16,568 AUD|Avg: $10,701 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 28, 2026
Retailer 4$7,826 AUD
Retailer 6$8,353 AUD
Retailer 12$8,875 AUD
Retailer 5$8,974 AUD
Retailer 15$8,974 AUD
Retailer 16$8,974 AUD
Retailer 13$9,085 AUD
Retailer 9$9,363 AUD
Retailer 2$9,443 AUD
Retailer 14$10,134 AUD
Retailer 3$10,355 AUD
Retailer 10$10,766 AUD
Retailer 7$10,920 AUD
Retailer 8$11,809 AUD
Retailer 11$14,612 AUD
NZ Jewellers$16,568 AUD

21 data points across 16 retailers

14 retailers$8,875 AUD to $10,134 AUD

Retailer 1
-
$7,826 AUD
Price last confirmed 12 days ago
Retailer 2
-
$8,353 AUD
View
Price last confirmed 12 days ago
A
Retailer 3
-
$8,875 AUD
View
Retailer 4
-
$8,974 AUD
View
Price last confirmed 38 days ago
Retailer 5
-
$8,974 AUD
View
Price last confirmed 28 days ago
Retailer 6
-
$8,974 AUD
View
Price last confirmed 26 days ago
A
Retailer 7
-
$9,085 AUD
View
Retailer 8
-
$9,443 AUD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$10,134 AUD
View
Retailer 10
-
$10,355 AUD
View
Price last confirmed 29 days ago
Retailer 11
-
$10,766 AUD
View
Price last confirmed 11 days ago
Retailer 12
-
$10,920 AUD
View
Price last confirmed 26 days ago
Retailer 13
-
$14,612 AUD
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
4b608332-e275-42d3-b560-35bc694d98a3 · Oct 9
$16,568 AUD
$11,384 USD
View
Price last confirmed 28 days ago
13 more retailers have this diamond
Prices start from $8,875 AUDSave up to $1,259 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
$8,875 AUD