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Oval|Natural|GIA

0.40ct I SI2 Oval Natural Diamond

GD • I/SI2 • GIA 2557856411

Certificate GIA 2557856411

Diamond specifications and retailer prices

From $353 AUD
$248 USD
As of October 31, 2026
Save $108 AUD (23%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $461 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 2557856411. Listed at 3 retailers as of October 31, 2026, with prices from $353 to $461, a $108 spread on the same certified stone. 77 Diamonds lists it at $461. 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
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557856411
Dimensions5.70 × 4.03 × 2.67 mm
L/W Ratio1.41
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal
Top View
5.70 mm4.03 mm0.40 ctI / SI2
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 2557856411
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.3%

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: $461 AUD|Low: $353 AUD|High: $464 AUD|Avg: $401 AUD|+2.8%
77 Diamonds
Retailer 2
Retailer 3
November 1, 2026
Retailer 2$353 AUD
Retailer 3$362 AUD
77 Diamonds$461 AUD

39 data points across 3 retailers

3 retailers$353 AUD to $461 AUD

B+
Cheapest Retailer
-
$353 AUD
$248 USD
Final sale: no returns
B+
Retailer 2
-
$362 AUD
SGD 344 SGD
View
Most Expensive
B+
77 Diamonds
OVCPJXH2UMF7 · Nov 1
$461 AUD
£255 GBP
View
2 more retailers have this diamond
Prices start from $353 AUDSave up to $108 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
$353 AUD