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Oval|Lab Grown|IGI

3.75ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG623481348

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG623481348

Diamond specifications and retailer prices

From $581 AUD
$407 USD
As of November 1, 2026
Save $3,728 AUD (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,309 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.75ct lab-grown oval diamond

This 3.75ct lab-grown oval 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 LG623481348 or 623481348. Listed at 16 retailers as of October 31, 2026, with prices from $581 to $4,309, a $3,728 spread on the same certified stone. Brilliant Earth lists it at $4,309. 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 angle35.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623481348
Dimensions13.04 × 8.67 × 5.40 mm
L/W Ratio1.50
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
13.04 mm8.67 mm3.75 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623481348
Side View
Table 61.0%Crown 35.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.3%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $4,309 AUD|Low: $558 AUD|High: $4,809 AUD|Avg: $1,644 AUD|-10.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 5$581 AUD
Retailer 12$651 AUD
Retailer 3$721 AUD
Retailer 16$721 AUD
Retailer 15$886 AUD
Retailer 11$927 AUD
Retailer 6$1,137 AUD
Retailer 2$1,174 AUD
Retailer 10$1,218 AUD
Retailer 7$1,300 AUD
Retailer 13$2,019 AUD
Retailer 8$2,052 AUD
Retailer 4$2,314 AUD
Retailer 9$2,812 AUD
Retailer 14$3,253 AUD
Brilliant Earth$4,309 AUD

39 data points across 16 retailers

16 retailers$581 AUD to $4,309 AUD

A
Cheapest Retailer
-
$581 AUD
$407 USD
A
Retailer 2
-
$651 AUD
$456 USD
View
A
Retailer 3
-
$721 AUD
$505 USD
View
Retailer 4
-
$721 AUD
$505 USD
View
Price last confirmed 8 days ago
Retailer 5
-
$886 AUD
£489 GBP
View
Price last confirmed 16 days ago
A
Retailer 6
-
$927 AUD
$650 USD
View
B+
Retailer 7
-
$1,137 AUD
$797 USD
View
A
Retailer 8
-
$1,174 AUD
£648 GBP
View
A
Retailer 9
-
$1,218 AUD
€813 EUR
View
A
Retailer 10
-
$1,300 AUD
$911 USD
View
B+
Retailer 11
-
$2,019 AUD
$1,415 USD
View
B+
Retailer 12
-
$2,052 AUD
$1,438 USD
View
B+
Retailer 13
-
$2,314 AUD
$1,622 USD
View
B+
Retailer 14
-
$2,812 AUD
£1,552 GBP
View
B
Retailer 15
-
$3,253 AUD
$2,280 USD
View
Most Expensive
B
Brilliant Earth
9368755A · Oct 31
$4,309 AUD
$3,020 USD
View
15 more retailers have this diamond
Prices start from $581 AUDSave up to $3,728 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 Oval
$581 AUD