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Oval|Natural|GIA

0.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 6561556478

Certificate GIA 6561556478

Diamond specifications and retailer prices

From $705 NZD
As of November 5, 2026
Save $796 NZD (53%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,501 NZD at Frank Darling · As of November 6, 2026
View at Frank Darling

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 6561556478. Listed at 9 retailers as of November 5, 2026, with prices from $705 to $1,501, a $796 spread on the same certified stone. Frank Darling lists it at $1,501. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6561556478
Dimensions6.28 × 4.51 × 2.82 mm
L/W Ratio1.39
Culet sizeNone
Top View
6.28 mm4.51 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6561556478
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.6%

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 5
Current: $1,501 NZD|Low: $704 NZD|High: $1,501 NZD|Avg: $1,034 NZD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 2$705 NZD
Retailer 7$722 NZD
Retailer 4$846 NZD
Retailer 8$936 NZD
Retailer 6$1,008 NZD
Retailer 5$1,100 NZD
Retailer 3$1,243 NZD
Frank Darling$1,501 NZD

10 data points across 8 retailers

9 retailers$705 NZD to $1,501 NZD

A
Cheapest Retailer
-
$705 NZD
A
Retailer 2
-
$722 NZD
View
A
Retailer 3
-
$758 NZD
View
A
Retailer 4
-
$846 NZD
View
A
Retailer 5
-
$936 NZD
View
A
Retailer 6
-
$1,008 NZD
View
B+
Retailer 7
-
$1,100 NZD
View
B+
Retailer 8
-
$1,243 NZD
View
Most Expensive
B
Frank Darling
2701750HK · Nov 6
$1,501 NZD
$832 USD
View
8 more retailers have this diamond
Prices start from $705 NZDSave up to $796 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.

A
0.51ct Oval
$705 NZD