Oval|Natural|GIA

0.51ct F SI1 Oval Natural Diamond

GD • F/SI1 • GIA 7492490306

Certificate GIA 7492490306

Diamond specifications and retailer prices

From $1,248 NZD
As of November 6, 2026
Save $1,227 NZD (50%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,246 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 F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7492490306. Listed at 15 retailers as of November 4, 2026, with a 98% 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
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7492490306
Dimensions6.77 × 4.38 × 2.75 mm
L/W Ratio1.55
Key to symbols
Crystal
Top View
6.77 mm4.38 mm0.51 ctF / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7492490306
Side View
Table 61.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 62.8%

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: $1,600 NZD|Low: $1,145 NZD|High: $2,509 NZD|Avg: $1,779 NZD|+4.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7$1,248 NZD
Retailer 5$1,270 NZD
Retailer 1$1,600 NZD
Retailer 6$1,669 NZD
Retailer 4$1,918 NZD
Retailer 8$2,035 NZD
Retailer 2$2,089 NZD
Retailer 3$2,475 NZD

42 data points across 8 retailers

15 retailers$1,248 NZD to $2,475 NZD

B+
Cheapest Retailer
-
$1,248 NZD
Final sale: no returns
B+
Retailer 2
-
$1,270 NZD
View
Retailer 3
-
$1,355 NZD
View
Price last confirmed 30 days ago
Retailer 4
-
$1,355 NZD
View
Price last confirmed 30 days ago
B+
Retailer 5
-
$1,376 NZD
View
Retailer 6
-
$1,405 NZD
View
Price last confirmed 39 days ago
Retailer 7
-
$1,562 NZD
View
Price last confirmed 39 days ago
B
Retailer 8
-
$1,593 NZD
View
B
Retailer 9
-
$1,600 NZD
View
B
Retailer 10
-
$1,669 NZD
View
B
Retailer 11
-
$1,918 NZD
View
Retailer 12
-
$2,035 NZD
View
Price last confirmed 34 days ago
B
Retailer 13
-
$2,089 NZD
View
B
Retailer 14
-
$2,475 NZD
View
Most Expensive
NZ Jewellers
f410a2aa-2356-4632-9caa-0db4fa25dcf5 · Sep 30
$4,246 NZD
$2,354 USD
View
Price under review
14 more retailers have this diamond
Prices start from $1,248 NZDSave up to $1,227 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
$1,248 NZD