Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 1515314942

Certificate GIA 1515314942

Diamond specifications and retailer prices

From $4,667 USD
₹444,516 INR
As of October 31, 2026
Save $4,461 USD (49%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $10,308 USD 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 October 29, 2026, with a 96% 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
Color
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: Oct 31
Current: $10,308 USD|Low: $4,667 USD|High: $10,308 USD|Avg: $6,760 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 5$4,667 USD
Retailer 3$5,372 USD
Retailer 10$5,688 USD
Retailer 6$5,913 USD
Retailer 11$6,124 USD
Retailer 12$6,163 USD
Retailer 7$6,735 USD
Retailer 4$6,888 USD
Retailer 2$7,572 USD
Retailer 9$8,930 USD
Retailer 8$9,129 USD
NZ Jewellers$10,308 USD

33 data points across 12 retailers

21 retailers$4,667 USD to $9,129 USD

B+
Cheapest Retailer
-
$4,667 USD
₹444,516 INR
B+
Retailer 2
-
$5,215 USD
View
B
Retailer 3
-
$5,372 USD
View
B
Retailer 4
-
$5,375 USD
View
B
Retailer 5
-
$5,423 USD
View
B+
Retailer 6
-
$5,688 USD
View
Final sale: no returns
B+
Retailer 7
-
$5,740 USD
View
B+
Retailer 8
-
$5,913 USD
£4,656 GBP
View
Retailer 9
-
$6,124 USD
A$9,422 AUD
View
Price last confirmed 27 days ago
Retailer 10
-
$6,163 USD
View
Price last confirmed 39 days ago
Retailer 11
-
$6,163 USD
View
Price last confirmed 23 days ago
Retailer 12
-
$6,163 USD
View
Price last confirmed 19 days ago
B
Retailer 13
-
$6,320 USD
View
B
Retailer 14
-
$6,735 USD
€6,414 EUR
View
B
Retailer 15
-
$6,888 USD
View
Retailer 16
-
$7,111 USD
View
Price last confirmed 39 days ago
Retailer 17
-
$7,111 USD
View
Price last confirmed 22 days ago
B
Retailer 18
-
$7,572 USD
ZAR 122,326 ZAR
View
B
Retailer 19
-
$8,930 USD
View
B
Retailer 20
-
$9,129 USD
£7,188 GBP
View
Most Expensive
NZ Jewellers
27ef9794-3a8d-43b7-9091-dffc4b51fe26 · Sep 30
$10,308 USD
View
Price last confirmed 31 days ago
20 more retailers have this diamond
Prices start from $4,667 USDSave up to $4,461 USD

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
$4,667 USD