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Round|Lab Grown|IGI

0.40ct H SI2 Round Lab Grown Diamond

VG • H/SI2 • IGI LGT-5398

Certificate IGI LGT-5398

Diamond specifications and retailer prices

From $712 AUD
£394 GBP
As of October 30, 2026
Save $238 AUD (25%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $950 AUD at Fonder Diamond · As of October 29, 2026
View at Fonder Diamond

About this 0.4ct lab-grown round diamond

This 0.4ct lab-grown round sits in the sub-half-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LGT-5398 or T-5398. Listed at 2 retailers as of October 29, 2026, with prices from $712 to $950, a $238 spread on the same certified stone. Fonder Diamond lists it at $950. 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
H
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LGT-5398
Dimensions4.67 × 4.70 mm
L/W Ratio1.01
Top View
4.67 mm4.70 mm0.40 ctH / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LGT-5398
Side View
Table 56.0%CrownGirdle: MED - STKPavilionCulet: NDepth 62.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: $950 AUD|Low: $520 AUD|High: $2,034 AUD|Avg: $937 AUD|-0.4%
Fonder Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 13, 2026
Retailer 5$520 AUD
Retailer 2$569 AUD
Retailer 4$712 AUD
Retailer 7$769 AUD
Fonder Diamond$950 AUD
Retailer 6$1,000 AUD
Retailer 3$2,034 AUD

3 data points across 7 retailers

2 retailers$712 AUD to $950 AUD

B
Cheapest Retailer
-
$712 AUD
£394 GBP
Most Expensive
B
Fonder Diamond
96982311 · Oct 29
$950 AUD
SGD 902 SGD
View
1 more retailer has this diamond
Prices start from $712 AUDSave up to $238 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 Round
$712 AUD