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Oval|Natural|GIA

0.51ct H SI2 Oval Natural Diamond

GD • H/SI2 • GIA 1493981532

Certificate GIA 1493981532

Diamond specifications and retailer prices

From $1,053 NZD
As of November 6, 2026
Save $1,580 NZD (60%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,583 NZD at NZ Jewellers · As of September 30, 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1493981532. Listed at 12 retailers as of November 4, 2026, with a 150% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1493981532
Dimensions6.80 × 4.35 × 2.57 mm
L/W Ratio1.56
Key to symbols
Twinning Wisp, Feather, Knot
Top View
6.80 mm4.35 mm0.51 ctH / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1493981532
Side View
Table 58.0%CrownGirdle: ThickPavilionCulet: NoneDepth 59.0%

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 6
Current: $1,393 NZD|Low: $1,048 NZD|High: $2,670 NZD|Avg: $1,493 NZD|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$1,048 NZD
Retailer 6$1,053 NZD
Retailer 4$1,108 NZD
Retailer 10$1,353 NZD
Retailer 8$1,371 NZD
Retailer 9$1,380 NZD
Retailer 1$1,393 NZD
Retailer 5$1,681 NZD
Retailer 2$1,739 NZD
Retailer 3$2,634 NZD

40 data points across 10 retailers

12 retailers$1,053 NZD to $2,634 NZD

B+
Cheapest Retailer
-
$1,053 NZD
Final sale: no returns
B+
Retailer 2
-
$1,108 NZD
View
Retailer 3
-
$1,142 NZD
View
Price last confirmed 29 days ago
Retailer 4
-
$1,230 NZD
View
Price last confirmed 29 days ago
Retailer 5
-
$1,230 NZD
View
Price last confirmed 38 days ago
Retailer 6
-
$1,319 NZD
View
Price last confirmed 38 days ago
B
Retailer 7
-
$1,371 NZD
View
B
Retailer 8
-
$1,380 NZD
View
B
Retailer 9
-
$1,393 NZD
View
B
Retailer 10
-
$1,681 NZD
View
C
Retailer 11
-
$2,634 NZD
View
Most Expensive
NZ Jewellers
4f03caa9-5f69-40d3-8af2-17a67eb13493 · Sep 30
$3,583 NZD
$1,986 USD
View
Price under review
11 more retailers have this diamond
Prices start from $1,053 NZDSave up to $1,580 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
$1,053 NZD