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Radiant|Natural|GIA

1.51ct L SI1 Radiant Natural Diamond

EX • L/SI1 • GIA 5456311800

Certificate GIA 5456311800

Diamond specifications and retailer prices

From $3,595 AUD
As of November 6, 2026
Save $4,047 AUD (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,642 AUD at NZ Jewellers · As of November 5, 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 L 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 5456311800. Listed at 10 retailers as of November 5, 2026, with prices from $3,595 to $7,642, a $4,047 spread on the same certified stone. NZ Jewellers lists it at $7,642. 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
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5456311800
Dimensions7.25 × 5.96 × 4.07 mm
L/W Ratio1.22
Top View
7.25 mm5.96 mm1.51 ctL / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5456311800
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $7,642 AUD|Low: $3,592 AUD|High: $7,642 AUD|Avg: $4,391 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 3$3,595 AUD
Retailer 6$3,656 AUD
Retailer 8$3,656 AUD
Retailer 9$3,825 AUD
Retailer 2$3,868 AUD
Retailer 7$4,218 AUD
Retailer 5$4,462 AUD
Retailer 4$4,539 AUD
NZ Jewellers$7,642 AUD

35 data points across 9 retailers

10 retailers$3,595 AUD to $7,642 AUD

B+
Cheapest Retailer
-
$3,595 AUD
B+
Retailer 2
-
$3,624 AUD
View
B+
Retailer 3
-
$3,656 AUD
View
Retailer 4
-
$3,656 AUD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$3,825 AUD
View
B+
Retailer 6
-
$3,868 AUD
View
B
Retailer 7
-
$4,218 AUD
View
B
Retailer 8
-
$4,462 AUD
View
B
Retailer 9
-
$4,539 AUD
View
Most Expensive
C
NZ Jewellers
1db707be-c5eb-4ffe-805f-2ad9ddca4a6d · Nov 5
$7,642 AUD
$5,251 USD
View
9 more retailers have this diamond
Prices start from $3,595 AUDSave up to $4,047 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.

B+
1.51ct Radiant
$3,595 AUD