Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 1515314942

Certificate GIA 1515314942

Diamond specifications and retailer prices

From $6,656 AUD
₹444,276 INR
As of November 2, 2026
Save $6,299 AUD (49%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $14,708 AUD at NZ Jewellers · As of September 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 1515314942. Listed at 21 retailers as of November 1, 2026, with a 95% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37.19°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1515314942
Dimensions9.00 × 6.43 × 4.04 mm
L/W Ratio1.40
Culet sizeNone
Top View
9.00 mm6.43 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1515314942
Side View
Table 60.0%Crown 37.19°Girdle: STK-THKPavilion 41°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $14,708 AUD|Low: $6,656 AUD|High: $14,708 AUD|Avg: $9,714 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 2$6,656 AUD
Retailer 3$7,665 AUD
Retailer 9$8,116 AUD
Retailer 5$8,437 AUD
Retailer 10$8,739 AUD
Retailer 11$8,794 AUD
Retailer 4$9,607 AUD
Retailer 7$10,804 AUD
Retailer 8$12,742 AUD
Retailer 6$12,955 AUD
NZ Jewellers$14,708 AUD

32 data points across 11 retailers

21 retailers$6,656 AUD to $12,955 AUD

B+
Cheapest Retailer
-
$6,656 AUD
₹444,276 INR
B+
Retailer 2
-
$7,441 AUD
$5,215 USD
View
B
Retailer 3
-
$7,665 AUD
$5,372 USD
View
B
Retailer 4
-
$7,670 AUD
$5,375 USD
View
B
Retailer 5
-
$7,738 AUD
$5,423 USD
View
B+
Retailer 6
-
$8,116 AUD
$5,688 USD
View
Final sale: no returns
B+
Retailer 7
-
$8,190 AUD
$5,740 USD
View
B+
Retailer 8
-
$8,437 AUD
£4,656 GBP
View
Retailer 9
-
$8,739 AUD
View
Price last confirmed 29 days ago
Retailer 10
-
$8,794 AUD
$6,163 USD
View
Price last confirmed 41 days ago
Retailer 11
-
$8,794 AUD
$6,163 USD
View
Price last confirmed 26 days ago
Retailer 12
-
$8,794 AUD
$6,163 USD
View
Price last confirmed 21 days ago
B
Retailer 13
-
$9,018 AUD
$6,320 USD
View
B
Retailer 14
-
$9,607 AUD
€6,412 EUR
View
B
Retailer 15
-
$9,829 AUD
$6,888 USD
View
Retailer 16
-
$10,147 AUD
$7,111 USD
View
Price last confirmed 41 days ago
Retailer 17
-
$10,147 AUD
$7,111 USD
View
Price last confirmed 24 days ago
B
Retailer 18
-
$10,804 AUD
ZAR 122,326 ZAR
View
B
Retailer 19
-
$12,742 AUD
$8,930 USD
View
B
Retailer 20
-
$12,955 AUD
£7,149 GBP
View
Most Expensive
NZ Jewellers
27ef9794-3a8d-43b7-9091-dffc4b51fe26 · Sep 30
$14,708 AUD
$10,308 USD
View
Price last confirmed 33 days ago
20 more retailers have this diamond
Prices start from $6,656 AUDSave up to $6,299 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.

B+
1.51ct Oval
$6,656 AUD