CaratHunter
Plans
Radiant|Natural|GIA

1.51ct D SI2 Radiant Natural Diamond

EX • D/SI2 • GIA 6545823175

Certificate GIA 6545823175

Diamond specifications and retailer prices

From $10,731 AUD
$7,538 USD
As of November 1, 2026
Save $12,190 AUD (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $22,921 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 D 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 6545823175. Listed at 14 retailers as of October 30, 2026, with prices from $10,731 to $22,921, a $12,190 spread on the same certified stone. NZ Jewellers lists it at $22,921. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6545823175
Dimensions7.89 × 5.72 × 3.88 mm
L/W Ratio1.38
Top View
7.89 mm5.72 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6545823175
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.9%

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 1
Current: $22,921 AUD|Low: $10,731 AUD|High: $22,921 AUD|Avg: $14,142 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
November 2, 2026
Retailer 6$10,731 AUD
Retailer 4$11,260 AUD
Retailer 12$11,461 AUD
Retailer 14$11,557 AUD
Retailer 11$12,417 AUD
Retailer 10$12,607 AUD
Retailer 8$12,796 AUD
Retailer 7$13,170 AUD
Retailer 2$13,937 AUD
Retailer 13$14,326 AUD
Retailer 5$14,330 AUD
Retailer 15$15,087 AUD
Retailer 3$16,338 AUD
Retailer 9$19,099 AUD
NZ Jewellers$22,921 AUD

42 data points across 15 retailers

14 retailers$10,731 AUD to $22,921 AUD

A
Cheapest Retailer
-
$10,731 AUD
$7,538 USD
B+
Retailer 2
-
$11,260 AUD
CA$10,986 CAD
View
B+
Retailer 3
-
$11,461 AUD
$8,051 USD
View
B+
Retailer 4
-
$11,557 AUD
$8,118 USD
View
B+
Retailer 5
-
$12,417 AUD
$8,722 USD
View
B+
Retailer 6
-
$12,607 AUD
$8,856 USD
View
B+
Retailer 7
-
$12,796 AUD
£7,078 GBP
View
B+
Retailer 8
-
$13,170 AUD
$9,251 USD
View
B
Retailer 9
-
$13,578 AUD
$9,538 USD
View
B+
Retailer 10
-
$13,937 AUD
€9,324 EUR
View
B+
Retailer 11
-
$14,326 AUD
$10,063 USD
View
B+
Retailer 12
-
$14,330 AUD
$10,066 USD
View
B
Retailer 13
-
$19,099 AUD
£10,564 GBP
View
Most Expensive
B
NZ Jewellers
ad15a242-6351-421f-8ec9-3852edf42832 · Oct 30
$22,921 AUD
$16,101 USD
View
13 more retailers have this diamond
Prices start from $10,731 AUDSave up to $12,190 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
$10,731 AUD