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Oval|Natural|GIA

0.51ct I SI2 Oval Natural Diamond

GD • I/SI2 • GIA 6545988752

Certificate GIA 6545988752

Diamond specifications and retailer prices

From $662 NZD
$373 USD
As of November 2, 2026
Save $159 NZD (19%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $821 NZD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6545988752. Listed at 3 retailers as of November 2, 2026, with prices from $662 to $821, a $159 spread on the same certified stone. 77 Diamonds lists it at $821. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545988752
Dimensions6.24 × 4.51 × 2.86 mm
L/W Ratio1.38
Top View
6.24 mm4.51 mm0.51 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6545988752
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.4%

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 2
Current: $821 NZD|Low: $573 NZD|High: $855 NZD|Avg: $726 NZD|-2.2%
77 Diamonds
Retailer 2
Retailer 3
November 2, 2026
Retailer 2$662 NZD
Retailer 3$708 NZD
77 Diamonds$821 NZD

35 data points across 3 retailers

3 retailers$662 NZD to $821 NZD

B+
Cheapest Retailer
-
$662 NZD
$373 USD
Final sale: no returns
B+
Retailer 2
-
$708 NZD
SGD 539 SGD
View
Most Expensive
B+
77 Diamonds
OVCPXZGFK6Z8 · Nov 2
$821 NZD
£364 GBP
View
2 more retailers have this diamond
Prices start from $662 NZDSave up to $159 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+
0.51ct Oval
$662 NZD