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Round|Natural|GIA

1.51ct D I1 Round Natural Diamond

EX • D/I1 • GIA 6515182503

Certificate GIA 6515182503

Diamond specifications and retailer prices

From $5,048 AUD
HK$27,700 HKD
As of November 1, 2026
Save $6,207 AUD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $11,255 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded D colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by GIA 6515182503. Listed at 11 retailers as of October 30, 2026, with prices from $5,048 to $11,255, a $6,207 spread on the same certified stone. NZ Jewellers lists it at $11,255. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6515182503
Dimensions7.29 × 7.33 × 4.50 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Top View
7.29 mm7.33 mm1.51 ctD / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6515182503
Side View
Table 59.0%Crown 35.5°Girdle: STK-STKPavilion 40.6°Culet: NoneDepth 61.6%

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 1
Current: $11,255 AUD|Low: $4,993 AUD|High: $11,844 AUD|Avg: $7,520 AUD|-5.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 6$5,048 AUD
Retailer 2$5,144 AUD
Retailer 5$5,635 AUD
Retailer 4$6,460 AUD
Retailer 7$6,747 AUD
Retailer 9$6,798 AUD
Retailer 3$7,281 AUD
Retailer 8$7,454 AUD
Retailer 10$10,329 AUD
NZ Jewellers$11,255 AUD

45 data points across 10 retailers

11 retailers$5,048 AUD to $11,255 AUD

A
Cheapest Retailer
-
$5,048 AUD
HK$27,700 HKD
A
Retailer 2
-
$5,144 AUD
₹344,140 INR
View
A
Retailer 3
-
$5,635 AUD
$3,958 USD
View
A
Retailer 4
-
$6,460 AUD
$4,538 USD
View
A
Retailer 5
-
$6,747 AUD
$4,740 USD
View
A
Retailer 6
-
$6,798 AUD
$4,775 USD
View
A
Retailer 7
-
$6,798 AUD
$4,775 USD
View
A
Retailer 8
-
$7,281 AUD
€4,871 EUR
View
B+
Retailer 9
-
$7,454 AUD
$5,236 USD
View
B
Retailer 10
-
$10,329 AUD
$7,255 USD
View
Most Expensive
B
NZ Jewellers
6860eb66-dc8a-4cd3-9ed8-2e23e42255fc · Oct 30
$11,255 AUD
$7,906 USD
View
10 more retailers have this diamond
Prices start from $5,048 AUDSave up to $6,207 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 Round
$5,048 AUD