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Round|Lab Grown|IGI

3.75ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG626426210

Shape and cutting style on the report: Round brilliant

Certificate IGI LG626426210

Diamond specifications and retailer prices

From $1,906 AUD
CA$1,859 CAD
As of October 30, 2026
Save $614 AUD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,520 AUD at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 3.75ct lab-grown round diamond

This 3.75ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG626426210 or 626426210. Listed at 2 retailers as of October 30, 2026, with prices from $1,906 to $2,520, a $614 spread on the same certified stone. The Diamond Guys lists it at $2,520. 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

3.75
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG626426210
Dimensions10.12 × 10.05 × 6.05 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
10.12 mm10.05 mm3.75 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG626426210
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.1%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: $3,125 AUD|Low: $379 AUD|High: $4,669 AUD|Avg: $1,898 AUD|-4.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 3, 2026
Retailer 9$440 AUD
Retailer 4$1,031 AUD
Retailer 6$1,120 AUD
Retailer 11$1,257 AUD
Retailer 2$1,273 AUD
Retailer 7$1,515 AUD
Retailer 10$1,539 AUD
Retailer 5$1,578 AUD
Retailer 8$1,906 AUD
Retailer 3$2,441 AUD
The Diamond Guys$2,520 AUD
Retailer 1$3,125 AUD
Retailer 12$3,929 AUD

56 data points across 13 retailers

2 retailers$1,906 AUD to $2,520 AUD

B+
Cheapest Retailer
-
$1,906 AUD
CA$1,859 CAD
Most Expensive
B
The Diamond Guys
1954434363 · Nov 1
$2,520 AUD
$1,770 USD
View
1 more retailer has this diamond
Prices start from $1,906 AUDSave up to $614 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+
3.75ct Round
$1,906 AUD