CaratHunter
Plans
Radiant|Natural|GIA

1.51ct F SI1 Radiant Natural Diamond

ID • F/SI1 • GIA 2556028833

Certificate GIA 2556028833

Diamond specifications and retailer prices

From $8,523 AUD
$5,973 USD
As of November 2, 2026
Save $7,641 AUD (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $16,164 AUD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556028833. Listed at 9 retailers as of October 30, 2026, with prices from $8,523 to $16,164, a $7,641 spread on the same certified stone. NZ Jewellers lists it at $16,164. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.89°
Pavilion angle34.11°
OriginNatural
Grading LabGIA
CertificateGIA 2556028833
Dimensions7.58 × 5.77 × 3.90 mm
L/W Ratio1.31
Top View
7.58 mm5.77 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556028833
Side View
Table 70.0%Crown 44.89°Girdle: Slightly ThickPavilion 34.11°Culet: NoneDepth 67.6%

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 2
Current: $16,164 AUD|Low: $8,523 AUD|High: $16,546 AUD|Avg: $10,735 AUD|-2.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 9$8,523 AUD
Retailer 8$8,961 AUD
Retailer 5$9,042 AUD
Retailer 12$9,418 AUD
Retailer 10$9,653 AUD
Retailer 6$9,664 AUD
Retailer 2$9,813 AUD
Retailer 11$9,951 AUD
Retailer 4$10,291 AUD
Retailer 3$10,937 AUD
Retailer 7$14,238 AUD
NZ Jewellers$16,164 AUD

38 data points across 12 retailers

9 retailers$8,523 AUD to $16,164 AUD

A
Cheapest Retailer
-
$8,523 AUD
$5,973 USD
A
Retailer 2
-
$8,961 AUD
$6,280 USD
View
A
Retailer 3
-
$9,042 AUD
£4,990 GBP
View
Retailer 4
-
$9,653 AUD
View
Price last confirmed 29 days ago
A
Retailer 5
-
$9,664 AUD
$6,773 USD
View
A
Retailer 6
-
$9,813 AUD
$6,877 USD
View
B+
Retailer 7
-
$9,951 AUD
$6,974 USD
View
B+
Retailer 8
-
$14,238 AUD
£7,857 GBP
View
Most Expensive
B
NZ Jewellers
8996cd54-20d8-49ae-966b-2b52284cc1fc · Oct 30
$16,164 AUD
$11,328 USD
View
8 more retailers have this diamond
Prices start from $8,523 AUDSave up to $7,641 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
$8,523 AUD