CaratHunter
Plans
Oval|Natural|GIA

0.51ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 6565801280

Certificate GIA 6565801280

Diamond specifications and retailer prices

From $320 USD
As of November 6, 2026
Save $1,328 USD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,648 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter 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 6565801280. Listed at 16 retailers as of November 5, 2026, with prices from $320 to $1,648, a $1,328 spread on the same certified stone. NZ Jewellers lists it at $1,648. 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

0.51
Carat
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6565801280
Dimensions6.32 × 4.47 × 2.85 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Knot
Top View
6.32 mm4.47 mm0.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6565801280
Side View
Table 60.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 63.7%

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 6
Current: $1,648 USD|Low: $320 USD|High: $1,648 USD|Avg: $630 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
November 6, 2026
Retailer 10$320 USD
Retailer 2$393 USD
Retailer 7$430 USD
Retailer 9$442 USD
Retailer 8$463 USD
Retailer 15$491 USD
Retailer 11$519 USD
Retailer 4$520 USD
Retailer 14$522 USD
Retailer 16$541 USD
Retailer 12$556 USD
Retailer 13$607 USD
Retailer 5$640 USD
Retailer 3$666 USD
Retailer 6$991 USD
NZ Jewellers$1,648 USD

5 data points across 16 retailers

16 retailers$320 USD to $1,648 USD

A
Cheapest Retailer
-
$320 USD
A
Retailer 2
-
$393 USD
View
Final sale: no returns
A
Retailer 3
-
$430 USD
View
A
Retailer 4
-
$442 USD
View
A
Retailer 5
-
$463 USD
View
A
Retailer 6
-
$491 USD
View
A
Retailer 7
-
$519 USD
View
B+
Retailer 8
-
$520 USD
View
A
Retailer 9
-
$522 USD
View
B+
Retailer 10
-
$541 USD
View
B+
Retailer 11
-
$556 USD
View
B+
Retailer 12
-
$607 USD
View
B+
Retailer 13
-
$640 USD
View
B
Retailer 14
-
$666 USD
View
B
Retailer 15
-
$991 USD
View
Most Expensive
B
NZ Jewellers
9a4e8a39-a3b4-4111-8165-27ef4de888cb · Nov 5
$1,648 USD
View
15 more retailers have this diamond
Prices start from $320 USDSave up to $1,328 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
0.51ct Oval
$320 USD