Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

GD • J/SI1 • GIA 2536653789

Certificate GIA 2536653789

Diamond specifications and retailer prices

From $5,048 AUD
HK$27,700 HKD
As of November 1, 2026
Save $5,742 AUD (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,419 AUD at NZ Jewellers · As of September 29, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2536653789. Listed at 19 retailers as of November 1, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.9°
OriginNatural
Grading LabGIA
CertificateGIA 2536653789
Dimensions8.78 × 6.35 × 4.15 mm
L/W Ratio1.38
Top View
8.78 mm6.35 mm1.51 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2536653789
Side View
Table 63.0%CrownGirdle: STK-VTKPavilion 41.9°Culet: NoneDepth 65.4%

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: $6,117 AUD|Low: $5,029 AUD|High: $11,461 AUD|Avg: $6,902 AUD|-0.5%
Retailer 1
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
November 2, 2026
Retailer 15$5,048 AUD
Retailer 18$5,069 AUD
Retailer 8$5,289 AUD
Retailer 13$5,363 AUD
Retailer 5$5,642 AUD
Retailer 11$5,731 AUD
Retailer 7$5,858 AUD
Retailer 1$6,117 AUD
Retailer 14$6,136 AUD
Retailer 12$6,433 AUD
Retailer 4$6,533 AUD
Retailer 16$7,044 AUD
Retailer 10$7,186 AUD
Retailer 9$7,569 AUD
Retailer 3$7,674 AUD
Retailer 2$8,375 AUD
Retailer 6$10,442 AUD
Retailer 17$10,790 AUD

26 data points across 18 retailers

19 retailers$5,048 AUD to $10,790 AUD

A
Cheapest Retailer
-
$5,048 AUD
HK$27,700 HKD
A
Retailer 2
-
$5,069 AUD
$3,561 USD
View
Retailer 3
-
$5,289 AUD
$3,715 USD
View
Price last confirmed 14 days ago
B+
Retailer 4
-
$5,363 AUD
$3,767 USD
View
B+
Retailer 5
-
$5,642 AUD
$3,963 USD
View
B+
Retailer 6
-
$5,731 AUD
$4,026 USD
View
Final sale: no returns
B+
Retailer 7
-
$5,858 AUD
$4,115 USD
View
B+
Retailer 8
-
$6,117 AUD
$4,297 USD
View
B+
Retailer 9
-
$6,136 AUD
$4,310 USD
View
B+
Retailer 10
-
$6,433 AUD
£3,558 GBP
View
B+
Retailer 11
-
$6,533 AUD
$4,589 USD
View
B
Retailer 12
-
$7,044 AUD
$4,948 USD
View
Retailer 13
-
$7,186 AUD
View
Price last confirmed 23 days ago
B
Retailer 14
-
$7,569 AUD
SGD 7,185 SGD
View
B
Retailer 15
-
$7,674 AUD
€5,134 EUR
View
B
Retailer 16
-
$8,375 AUD
ZAR 95,042 ZAR
View
B
Retailer 17
-
$10,442 AUD
$7,335 USD
View
B
Retailer 18
-
$10,790 AUD
£5,968 GBP
View
Most Expensive
NZ Jewellers
f6b78bb8-c63d-4413-955f-f244919ba279 · Sep 29
$12,419 AUD
$8,724 USD
View
Price last confirmed 33 days ago
18 more retailers have this diamond
Prices start from $5,048 AUDSave up to $5,742 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
$5,048 AUD