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Round|Lab Grown|IGI

3.75ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG622479011

Shape and cutting style on the report: Round brilliant

Certificate IGI LG622479011

Diamond specifications and retailer prices

From $1,215 AUD
€813 EUR
As of November 2, 2026
Save $2,728 AUD (69%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,943 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 LG622479011 or 622479011. Listed at 13 retailers as of October 31, 2026, with prices from $1,215 to $3,943, a $2,728 spread on the same certified stone. Brilliant Earth lists it at $3,943. 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 angle33.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG622479011
Dimensions10.09 × 10.07 × 6.06 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
10.09 mm10.07 mm3.75 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG622479011
Side View
Table 58.0%Crown 33.9°Girdle: THN-MEDPavilion 40.6°Culet: NoneDepth 60.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $3,943 AUD|Low: $747 AUD|High: $4,157 AUD|Avg: $1,828 AUD|-5.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3$747 AUD
Retailer 11$1,053 AUD
Retailer 2$1,215 AUD
Retailer 7$1,231 AUD
Retailer 10$1,362 AUD
Retailer 8$1,442 AUD
Retailer 4$1,442 AUD
Retailer 9$2,067 AUD
Retailer 6$2,357 AUD
Retailer 5$3,679 AUD
Brilliant Earth$3,943 AUD

37 data points across 11 retailers

13 retailers$1,215 AUD to $3,943 AUD

Retailer 1
-
$602 AUD
$423 USD
Price last confirmed 39 days ago
Retailer 2
-
$675 AUD
$474 USD
View
Price last confirmed 39 days ago
Retailer 3
-
$737 AUD
$518 USD
View
Price last confirmed 35 days ago
A
Retailer 4
-
$1,215 AUD
€813 EUR
View
B+
Retailer 5
-
$1,231 AUD
$865 USD
View
B+
Retailer 6
-
$1,362 AUD
$957 USD
View
A
Retailer 7
-
$1,442 AUD
$1,013 USD
View
B+
Retailer 8
-
$1,442 AUD
£798 GBP
View
B+
Retailer 9
-
$2,067 AUD
$1,452 USD
View
B
Retailer 10
-
$2,357 AUD
$1,656 USD
View
Retailer 11
-
$2,403 AUD
$1,688 USD
View
Price last confirmed 36 days ago
B
Retailer 12
-
$3,679 AUD
£2,035 GBP
View
Most Expensive
B
Brilliant Earth
9288387A · Oct 31
$3,943 AUD
$2,770 USD
View
12 more retailers have this diamond
Prices start from $1,215 AUDSave up to $2,728 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.

A
3.75ct Round
$1,215 AUD