CaratHunter
Plans
Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

ID • J/SI1 • GIA 6535853653

Certificate GIA 6535853653

Diamond specifications and retailer prices

From $5,143 AUD
$3,604 USD
As of October 31, 2026
Save $5,549 AUD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $10,692 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6535853653. Listed at 21 retailers as of October 30, 2026, with prices from $5,143 to $10,692, a $5,549 spread on the same certified stone. NZ Jewellers lists it at $10,692. 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
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.58°
OriginNatural
Grading LabGIA
CertificateGIA 6535853653
Dimensions9.12 × 6.46 × 4.07 mm
L/W Ratio1.41
Top View
9.12 mm6.46 mm1.51 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6535853653
Side View
Table 60.0%Crown 35.58°Girdle: SLI-THKPavilionCulet: NoneDepth 63.0%

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 31
Current: $10,692 AUD|Low: $4,963 AUD|High: $10,692 AUD|Avg: $6,724 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
Retailer 18
Retailer 19
November 2, 2026
Retailer 11$5,143 AUD
Retailer 7$5,399 AUD
Retailer 14$5,486 AUD
Retailer 3$5,595 AUD
Retailer 8$5,665 AUD
Retailer 9$5,822 AUD
Retailer 2$5,904 AUD
Retailer 17$6,137 AUD
Retailer 18$6,137 AUD
Retailer 19$6,137 AUD
Retailer 13$6,226 AUD
Retailer 6$6,349 AUD
Retailer 10$6,364 AUD
Retailer 4$6,491 AUD
Retailer 12$6,943 AUD
Retailer 5$7,082 AUD
Retailer 16$7,543 AUD
Retailer 15$9,775 AUD
NZ Jewellers$10,692 AUD

24 data points across 19 retailers

21 retailers$5,143 AUD to $10,692 AUD

A
Cheapest Retailer
-
$5,143 AUD
$3,604 USD
A
Retailer 2
-
$5,399 AUD
$3,784 USD
View
A
Retailer 3
-
$5,486 AUD
$3,845 USD
View
A
Retailer 4
-
$5,595 AUD
$3,921 USD
View
A
Retailer 5
-
$5,665 AUD
$3,970 USD
View
Final sale: no returns
A
Retailer 6
-
$5,822 AUD
$4,080 USD
View
A
Retailer 7
-
$5,904 AUD
£3,258 GBP
View
B+
Retailer 8
-
$6,137 AUD
$4,301 USD
View
B+
Retailer 9
-
$6,137 AUD
$4,301 USD
View
B+
Retailer 10
-
$6,137 AUD
$4,301 USD
View
B+
Retailer 11
-
$6,226 AUD
£3,436 GBP
View
B+
Retailer 12
-
$6,349 AUD
$4,449 USD
View
B+
Retailer 13
-
$6,364 AUD
$4,460 USD
View
B+
Retailer 14
-
$6,491 AUD
$4,549 USD
View
Retailer 15
-
$6,659 AUD
View
Price last confirmed 23 days ago
B+
Retailer 16
-
$6,943 AUD
€4,634 EUR
View
B+
Retailer 17
-
$7,082 AUD
$4,963 USD
View
B+
Retailer 18
-
$7,543 AUD
ZAR 85,406 ZAR
View
B
Retailer 19
-
$9,775 AUD
£5,394 GBP
View
Retailer 20
-
$10,147 AUD
$7,111 USD
View
Price last confirmed 9 days ago
Most Expensive
B
NZ Jewellers
9d590c74-603f-4327-ba15-8433d252e1d6 · Oct 30
$10,692 AUD
$7,493 USD
View
20 more retailers have this diamond
Prices start from $5,143 AUDSave up to $5,549 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 Oval
$5,143 AUD