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Radiant|Natural|GIA

1.51ct H SI2 Radiant Natural Diamond

EX • H/SI2 • GIA 1555953779

Certificate GIA 1555953779

Diamond specifications and retailer prices

From $7,065 AUD
As of November 6, 2026
Save $8,453 AUD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $15,517 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555953779. Listed at 19 retailers as of November 5, 2026, with prices from $7,065 to $15,517, a $8,453 spread on the same certified stone. NZ Jewellers lists it at $15,517. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555953779
Dimensions7.67 × 5.51 × 3.84 mm
L/W Ratio1.39
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Cavity, Feather, Needle
Top View
7.67 mm5.51 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555953779
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.7%

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: $15,517 AUD|Low: $7,111 AUD|High: $15,517 AUD|Avg: $9,760 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 11$7,757 AUD
Retailer 7$8,252 AUD
Retailer 9$8,405 AUD
Retailer 10$8,405 AUD
Retailer 2$8,897 AUD
Retailer 4$8,939 AUD
Retailer 3$9,460 AUD
Retailer 8$9,699 AUD
Retailer 5$10,079 AUD
Retailer 6$13,631 AUD
NZ Jewellers$15,517 AUD

33 data points across 11 retailers

19 retailers$7,065 AUD to $15,517 AUD

A
Cheapest Retailer
-
$7,065 AUD
A
Retailer 2
-
$7,402 AUD
View
A
Retailer 3
-
$7,757 AUD
View
Final sale: no returns
A
Retailer 4
-
$7,900 AUD
View
B+
Retailer 5
-
$8,252 AUD
View
B+
Retailer 6
-
$8,405 AUD
View
B+
Retailer 7
-
$8,405 AUD
View
B+
Retailer 8
-
$8,862 AUD
View
B+
Retailer 9
-
$8,897 AUD
View
B+
Retailer 10
-
$8,939 AUD
View
B+
Retailer 11
-
$8,948 AUD
View
B+
Retailer 12
-
$9,460 AUD
View
B+
Retailer 13
-
$9,460 AUD
View
B+
Retailer 14
-
$9,699 AUD
View
B+
Retailer 15
-
$9,780 AUD
View
B+
Retailer 16
-
$10,079 AUD
View
B
Retailer 17
-
$13,576 AUD
View
B
Retailer 18
-
$13,631 AUD
View
Most Expensive
B
NZ Jewellers
9ac07ea6-12d9-46ef-8643-3550185b7877 · Nov 5
$15,517 AUD
$10,662 USD
View
18 more retailers have this diamond
Prices start from $7,065 AUDSave up to $8,453 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
$7,065 AUD