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Oval|Natural|GIA

0.40ct I SI2 Oval Natural Diamond

GD • I/SI2 • GIA 2557453851

Certificate GIA 2557453851

Diamond specifications and retailer prices

From $377 AUD
$265 USD
As of October 31, 2026
Save $117 AUD (24%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $494 AUD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 0.4ct natural oval diamond

This 0.4ct natural oval sits in the sub-half-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 2557453851. Listed at 3 retailers as of October 31, 2026, with prices from $377 to $494, a $117 spread on the same certified stone. 77 Diamonds lists it at $494. 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

0.40
Carat
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557453851
Dimensions5.57 × 4.13 × 2.72 mm
L/W Ratio1.35
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
5.57 mm4.13 mm0.40 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557453851
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 65.7%

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: Oct 31
Current: $494 AUD|Low: $377 AUD|High: $505 AUD|Avg: $434 AUD|-0.3%
77 Diamonds
Retailer 2
Retailer 3
November 1, 2026
Retailer 2$377 AUD
Retailer 3$389 AUD
77 Diamonds$494 AUD

39 data points across 3 retailers

3 retailers$377 AUD to $494 AUD

B+
Cheapest Retailer
-
$377 AUD
$265 USD
Final sale: no returns
B+
Retailer 2
-
$389 AUD
SGD 369 SGD
View
Most Expensive
B+
77 Diamonds
OVCPVPSF6FHM · Nov 1
$494 AUD
£273 GBP
View
2 more retailers have this diamond
Prices start from $377 AUDSave up to $117 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+
0.40ct Oval
$377 AUD