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Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

ID • E/SI1 • GIA 1559156534

Certificate GIA 1559156534

Diamond specifications and retailer prices

From $7,914 AUD
$5,560 USD
As of October 29, 2026
Save $6,280 AUD (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $14,194 AUD at NZ Jewellers · As of October 27, 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 E 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 1559156534. Listed at 9 retailers as of October 27, 2026, with prices from $7,914 to $14,194, a $6,280 spread on the same certified stone. NZ Jewellers lists it at $14,194. 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
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle54.56°
Pavilion angle35.61°
OriginNatural
Grading LabGIA
CertificateGIA 1559156534
Dimensions7.23 × 5.70 × 4.02 mm
L/W Ratio1.27
Girdle conditionVery Thick
Key to symbols
Crystal, Cloud, Feather, Cavity, Needle, Indented Natural
Top View
7.23 mm5.70 mm1.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559156534
Side View
Table 74.0%Crown 54.56°Girdle: MED-VTKPavilion 35.61°Culet: NoneDepth 70.5%

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: Oct 29
Current: $14,194 AUD|Low: $7,617 AUD|High: $14,342 AUD|Avg: $9,410 AUD|-1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 11$7,617 AUD
Retailer 8$7,914 AUD
Retailer 2$7,965 AUD
Retailer 10$8,199 AUD
Retailer 5$8,486 AUD
Retailer 6$8,486 AUD
Retailer 7$8,500 AUD
Retailer 9$8,636 AUD
Retailer 3$9,031 AUD
Retailer 4$12,571 AUD
NZ Jewellers$14,194 AUD

37 data points across 11 retailers

9 retailers$7,914 AUD to $14,194 AUD

A
Cheapest Retailer
-
$7,914 AUD
$5,560 USD
A
Retailer 2
-
$7,965 AUD
£4,406 GBP
View
Retailer 3
-
$8,199 AUD
$5,760 USD
View
Price last confirmed 30 days ago
A
Retailer 4
-
$8,486 AUD
$5,962 USD
View
A
Retailer 5
-
$8,486 AUD
$5,962 USD
View
Retailer 6
-
$8,500 AUD
View
Price last confirmed 20 days ago
A
Retailer 7
-
$8,636 AUD
$6,067 USD
View
B+
Retailer 8
-
$12,571 AUD
£6,954 GBP
View
Most Expensive
B
NZ Jewellers
4ae519c7-44c9-4346-8684-d693f49de9c5 · Oct 27
$14,194 AUD
$9,972 USD
View
8 more retailers have this diamond
Prices start from $7,914 AUDSave up to $6,280 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
$7,914 AUD