Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 1515314942

Certificate GIA 1515314942

Diamond specifications and retailer prices

From $8,280 NZD
₹444,419 INR
As of November 1, 2026
Save $7,830 NZD (49%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $18,289 NZD 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 1
Current: $18,289 NZD|Low: $8,280 NZD|High: $18,289 NZD|Avg: $12,051 NZD
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 5$8,280 NZD
Retailer 3$9,532 NZD
Retailer 9$10,092 NZD
Retailer 4$10,491 NZD
Retailer 10$10,867 NZD
Retailer 11$10,935 NZD
Retailer 2$11,946 NZD
Retailer 7$13,435 NZD
Retailer 8$15,844 NZD
Retailer 6$16,109 NZD
NZ Jewellers$18,289 NZD

33 data points across 11 retailers

21 retailers$8,280 NZD to $16,109 NZD

B+
Cheapest Retailer
-
$8,280 NZD
₹444,419 INR
B+
Retailer 2
-
$9,253 NZD
$5,215 USD
View
B
Retailer 3
-
$9,532 NZD
$5,372 USD
View
B
Retailer 4
-
$9,537 NZD
$5,375 USD
View
B
Retailer 5
-
$9,622 NZD
$5,423 USD
View
B+
Retailer 6
-
$10,092 NZD
$5,688 USD
View
Final sale: no returns
B+
Retailer 7
-
$10,184 NZD
$5,740 USD
View
B+
Retailer 8
-
$10,491 NZD
£4,656 GBP
View
Retailer 9
-
$10,867 NZD
A$9,422 AUD
View
Price last confirmed 29 days ago
Retailer 10
-
$10,935 NZD
$6,163 USD
View
Price last confirmed 41 days ago
Retailer 11
-
$10,935 NZD
$6,163 USD
View
Price last confirmed 25 days ago
Retailer 12
-
$10,935 NZD
$6,163 USD
View
Price last confirmed 21 days ago
B
Retailer 13
-
$11,213 NZD
$6,320 USD
View
B
Retailer 14
-
$11,946 NZD
€6,412 EUR
View
B
Retailer 15
-
$12,222 NZD
$6,888 USD
View
Retailer 16
-
$12,617 NZD
$7,111 USD
View
Price last confirmed 41 days ago
Retailer 17
-
$12,617 NZD
$7,111 USD
View
Price last confirmed 24 days ago
B
Retailer 18
-
$13,435 NZD
ZAR 122,326 ZAR
View
B
Retailer 19
-
$15,844 NZD
$8,930 USD
View
B
Retailer 20
-
$16,109 NZD
£7,149 GBP
View
Most Expensive
NZ Jewellers
27ef9794-3a8d-43b7-9091-dffc4b51fe26 · Sep 30
$18,289 NZD
$10,308 USD
View
Price last confirmed 32 days ago
20 more retailers have this diamond
Prices start from $8,280 NZDSave up to $7,830 NZD

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
$8,280 NZD