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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 2487987638

Certificate GIA 2487987638

Diamond specifications and retailer prices

From $3,918 AUD
HK$21,500 HKD
As of November 1, 2026
Save $5,205 AUD (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $9,122 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 2487987638. Listed at 16 retailers as of October 30, 2026, with prices from $3,918 to $9,122, a $5,205 spread on the same certified stone. NZ Jewellers lists it at $9,122. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2487987638
Dimensions7.26 × 7.20 × 4.64 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.26 mm7.20 mm1.51 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2487987638
Side View
Table 56.0%Crown 36°Girdle: Sli. ThickPavilion 41.4°Culet: NoneDepth 64.2%

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: $9,122 AUD|Low: $3,881 AUD|High: $9,122 AUD|Avg: $5,597 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
Retailer 16
Retailer 17
November 2, 2026
Retailer 13$3,918 AUD
Retailer 3$4,227 AUD
Retailer 7$4,484 AUD
Retailer 4$4,648 AUD
Retailer 5$4,753 AUD
Retailer 14$5,236 AUD
Retailer 16$5,236 AUD
Retailer 8$5,253 AUD
Retailer 10$5,394 AUD
Retailer 15$5,437 AUD
Retailer 9$5,438 AUD
Retailer 6$5,443 AUD
Retailer 17$6,042 AUD
Retailer 11$6,103 AUD
Retailer 2$6,775 AUD
Retailer 12$8,756 AUD
NZ Jewellers$9,122 AUD

30 data points across 17 retailers

16 retailers$3,918 AUD to $9,122 AUD

A
Cheapest Retailer
-
$3,918 AUD
HK$21,500 HKD
B+
Retailer 2
-
$4,227 AUD
₹282,785 INR
View
B+
Retailer 3
-
$4,648 AUD
$3,265 USD
View
B+
Retailer 4
-
$4,753 AUD
$3,339 USD
View
B+
Retailer 5
-
$5,236 AUD
$3,678 USD
View
B+
Retailer 6
-
$5,236 AUD
$3,678 USD
View
B+
Retailer 7
-
$5,253 AUD
$3,690 USD
View
B+
Retailer 8
-
$5,394 AUD
£2,983 GBP
View
B+
Retailer 9
-
$5,437 AUD
$3,819 USD
View
B+
Retailer 10
-
$5,438 AUD
SGD 5,162 SGD
View
B+
Retailer 11
-
$5,443 AUD
$3,824 USD
View
B+
Retailer 12
-
$6,042 AUD
$4,244 USD
View
B+
Retailer 13
-
$6,103 AUD
€4,083 EUR
View
B+
Retailer 14
-
$6,775 AUD
£3,747 GBP
View
B
Retailer 15
-
$8,756 AUD
£4,843 GBP
View
Most Expensive
B
NZ Jewellers
da012cf4-68a9-4999-8152-cf296314ae29 · Oct 30
$9,122 AUD
$6,408 USD
View
15 more retailers have this diamond
Prices start from $3,918 AUDSave up to $5,205 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
$3,918 AUD