Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

ID • J/SI1 • GIA 6535853653

Certificate GIA 6535853653

Diamond specifications and retailer prices

From $3,604 USD
As of October 31, 2026
Save $3,889 USD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,493 USD 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 $3,604 to $7,493, a $3,889 spread on the same certified stone. NZ Jewellers lists it at $7,493. 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
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: $7,493 USD|Low: $3,478 USD|High: $7,493 USD|Avg: $4,750 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 10$3,604 USD
Retailer 6$3,784 USD
Retailer 20$3,921 USD
Retailer 7$3,970 USD
Retailer 8$4,080 USD
Retailer 11$4,120 USD
Retailer 14$4,151 USD
Retailer 16$4,301 USD
Retailer 17$4,301 USD
Retailer 19$4,301 USD
Retailer 15$4,400 USD
Retailer 5$4,449 USD
Retailer 9$4,460 USD
Retailer 3$4,549 USD
Retailer 12$4,667 USD
Retailer 13$4,868 USD
Retailer 4$4,963 USD
Retailer 2$5,287 USD
Retailer 18$6,887 USD
NZ Jewellers$7,493 USD

24 data points across 20 retailers

21 retailers$3,604 USD to $7,493 USD

A
Cheapest Retailer
-
$3,604 USD
A
Retailer 2
-
$3,784 USD
View
A
Retailer 3
-
$3,921 USD
View
A
Retailer 4
-
$3,970 USD
View
Final sale: no returns
A
Retailer 5
-
$4,080 USD
View
Retailer 6
-
$4,120 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$4,151 USD
£3,268 GBP
View
B+
Retailer 8
-
$4,301 USD
View
B+
Retailer 9
-
$4,301 USD
View
B+
Retailer 10
-
$4,301 USD
View
B+
Retailer 11
-
$4,400 USD
£3,464 GBP
View
B+
Retailer 12
-
$4,449 USD
View
B+
Retailer 13
-
$4,460 USD
View
B+
Retailer 14
-
$4,549 USD
View
Retailer 15
-
$4,667 USD
A$7,180 AUD
View
Price last confirmed 22 days ago
B+
Retailer 16
-
$4,868 USD
€4,636 EUR
View
B+
Retailer 17
-
$4,963 USD
View
B+
Retailer 18
-
$5,287 USD
ZAR 85,406 ZAR
View
B
Retailer 19
-
$6,887 USD
£5,423 GBP
View
Retailer 20
-
$7,111 USD
View
Price last confirmed 8 days ago
Most Expensive
B
NZ Jewellers
9d590c74-603f-4327-ba15-8433d252e1d6 · Oct 30
$7,493 USD
View
20 more retailers have this diamond
Prices start from $3,604 USDSave up to $3,889 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.

A
1.51ct Oval
$3,604 USD