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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 $850 AUD
As of November 6, 2026
Save $1,275 AUD (60%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,890 AUD 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: $1,124 AUD|Low: $846 AUD|High: $2,154 AUD|Avg: $1,204 AUD|+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$846 AUD
Retailer 6$850 AUD
Retailer 4$894 AUD
Retailer 10$1,092 AUD
Retailer 8$1,106 AUD
Retailer 9$1,113 AUD
Retailer 1$1,124 AUD
Retailer 5$1,356 AUD
Retailer 2$1,403 AUD
Retailer 3$2,125 AUD

40 data points across 10 retailers

12 retailers$850 AUD to $2,125 AUD

B+
Cheapest Retailer
-
$850 AUD
Final sale: no returns
B+
Retailer 2
-
$894 AUD
View
Retailer 3
-
$921 AUD
View
Price last confirmed 29 days ago
Retailer 4
-
$993 AUD
View
Price last confirmed 29 days ago
Retailer 5
-
$993 AUD
View
Price last confirmed 38 days ago
Retailer 6
-
$1,064 AUD
View
Price last confirmed 38 days ago
B
Retailer 7
-
$1,106 AUD
View
B
Retailer 8
-
$1,113 AUD
View
B
Retailer 9
-
$1,124 AUD
View
B
Retailer 10
-
$1,356 AUD
View
C
Retailer 11
-
$2,125 AUD
View
Most Expensive
NZ Jewellers
4f03caa9-5f69-40d3-8af2-17a67eb13493 · Sep 30
$2,890 AUD
$1,986 USD
View
Price under review
11 more retailers have this diamond
Prices start from $850 AUDSave up to $1,275 AUD

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
$850 AUD