Oval|Natural|GIA

0.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 2568589589

Certificate GIA 2568589589

Diamond specifications and retailer prices

From $405 USD
As of November 6, 2026
Save $1,407 USD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,812 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 H 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 2568589589. Listed at 11 retailers as of November 5, 2026, with prices from $405 to $1,812, a $1,407 spread on the same certified stone. NZ Jewellers lists it at $1,812. 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
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2568589589
Dimensions6.31 × 4.33 × 2.78 mm
L/W Ratio1.46
Girdle conditionThick
Top View
6.31 mm4.33 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2568589589
Side View
Table 61.0%CrownGirdle: MediumPavilionCulet: NoneDepth 64.2%

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: $1,812 USD|Low: $405 USD|High: $1,812 USD|Avg: $774 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10$405 USD
Retailer 2$429 USD
Retailer 6$655 USD
Retailer 4$702 USD
Retailer 3$705 USD
Retailer 8$709 USD
Retailer 9$711 USD
Retailer 7$856 USD
Retailer 5$891 USD
NZ Jewellers$1,812 USD

10 data points across 10 retailers

11 retailers$405 USD to $1,812 USD

A
Cheapest Retailer
-
$405 USD
Final sale: no returns
A
Retailer 2
-
$429 USD
View
A
Retailer 3
-
$569 USD
View
B+
Retailer 4
-
$655 USD
View
B+
Retailer 5
-
$702 USD
View
B+
Retailer 6
-
$705 USD
View
B+
Retailer 7
-
$709 USD
View
B+
Retailer 8
-
$711 USD
View
B+
Retailer 9
-
$856 USD
View
B
Retailer 10
-
$891 USD
View
Most Expensive
B
NZ Jewellers
48c9bb09-83af-4f02-ae8f-d0c082692294 · Nov 5
$1,812 USD
View
10 more retailers have this diamond
Prices start from $405 USDSave up to $1,407 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
$405 USD