Round|Lab Grown|IGI

0.40ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LGY-24910

Certificate IGI LGY-24910

Diamond specifications and retailer prices

From $430 USD
As of October 31, 2026
Save $301 USD (41%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $731 USD at Fonder Diamond · As of October 31, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LGY-24910 or Y-24910. Listed at 2 retailers as of October 31, 2026, with prices from $430 to $731, a $301 spread on the same certified stone. Fonder Diamond lists it at $731. 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
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LGY-24910
Dimensions4.82 × 4.84 mm
L/W Ratio1.00
Top View
4.82 mm4.84 mm0.40 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LGY-24910
Side View
Table 61.0%CrownGirdle: THN - MEDPavilionCulet: NDepth 58.8%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $731 USD|Low: $333 USD|High: $1,299 USD|Avg: $722 USD|-0.4%
Fonder Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 13, 2026
Retailer 2$333 USD
Retailer 3$430 USD
Retailer 5$720 USD
Fonder Diamond$731 USD
Retailer 6$818 USD
Retailer 4$1,299 USD

4 data points across 6 retailers

2 retailers$430 USD to $731 USD

B
Cheapest Retailer
-
$430 USD
Most Expensive
B
Fonder Diamond
96932507 · Oct 31
$731 USD
SGD 988 SGD
View
1 more retailer has this diamond
Prices start from $430 USDSave up to $301 USD

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
$430 USD