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Oval|Natural|GIA

0.51ct J SI2 Oval Natural Diamond

GD • J/SI2 • GIA 1242109779

Certificate GIA 1242109779

Diamond specifications and retailer prices

From $490 AUD
As of November 6, 2026
Save $650 AUD (57%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,141 AUD at 77 Diamonds · As of November 6, 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 J 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 1242109779. Listed at 3 retailers as of November 6, 2026, with prices from $490 to $1,141, a $650 spread on the same certified stone. 77 Diamonds lists it at $1,141. 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
J
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1242109779
Dimensions6.69 × 4.44 × 2.67 mm
L/W Ratio1.51
Top View
6.69 mm4.44 mm0.51 ctJ / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1242109779
Side View
Table 66.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 60.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,141 AUD|Low: $490 AUD|High: $1,159 AUD|Avg: $802 AUD|-1.6%
77 Diamonds
Retailer 2
November 6, 2026
Retailer 2$490 AUD
77 Diamonds$1,141 AUD

9 data points across 2 retailers

3 retailers$490 AUD to $1,141 AUD

B+
Cheapest Retailer
-
$490 AUD
Final sale: no returns
B+
Retailer 2
-
$720 AUD
View
Most Expensive
B
77 Diamonds
OVCFDKHECRCB · Nov 6
$1,141 AUD
£617 GBP
View
2 more retailers have this diamond
Prices start from $490 AUDSave up to $650 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
$490 AUD