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Oval|Lab Grown|GIA

0.40ct D SI1 Oval Lab Grown Diamond

EX • D/SI1 • GIA 6552109765

Certificate GIA 6552109765

Diamond specifications and retailer prices

From $542 AUD
₹36,284 INR
As of October 31, 2026
Save $137 AUD (20%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,480 AUD at Moon Ocean · As of October 30, 2026
View at Moon Ocean

About this 0.4ct lab-grown oval diamond

This 0.4ct lab-grown oval sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552109765. Listed at 11 retailers as of October 31, 2026, with a 25% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.40
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6552109765
Dimensions5.96 × 4.12 × 2.50 mm
L/W Ratio1.45
Top View
5.96 mm4.12 mm0.40 ctD / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552109765
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.7%

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: $1,480 AUD|Low: $541 AUD|High: $3,808 AUD|Avg: $1,383 AUD
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 4$542 AUD
Retailer 6$679 AUD
Retailer 8$698 AUD
Retailer 7$901 AUD
Retailer 10$913 AUD
Retailer 2$913 AUD
Retailer 5$1,093 AUD
Retailer 9$1,398 AUD
Moon Ocean$1,480 AUD
Retailer 3$1,683 AUD

42 data points across 10 retailers

11 retailers$542 AUD to $679 AUD

B+
Cheapest Retailer
-
$542 AUD
₹36,284 INR
B
Retailer 2
-
$679 AUD
$477 USD
View
Retailer 3
-
$698 AUD
$490 USD
View
Price last confirmed 30 days ago
Retailer 4
-
$814 AUD
$572 USD
View
Price last confirmed 37 days ago
Retailer 5
-
$901 AUD
$633 USD
View
Price last confirmed 29 days ago
Retailer 6
-
$913 AUD
£505 GBP
View
Price under review
Retailer 7
-
$1,093 AUD
€731 EUR
View
Price under review
Retailer 8
-
$1,398 AUD
$982 USD
View
Price under review
Most Expensive
Moon Ocean
NVN-6DDE87F7B-765 · Oct 30
$1,480 AUD
£819 GBP
View
Price under review
8 more retailers have this diamond
Prices start from $542 AUDSave up to $137 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
$542 AUD