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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 $407 USD
As of October 29, 2026
Save $2,613 USD (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,020 USD 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 29, 2026, with prices from $407 to $3,020, a $2,613 spread on the same certified stone. Brilliant Earth lists it at $3,020. 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
Color
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

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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: Oct 29
Current: $3,020 USD|Low: $391 USD|High: $3,370 USD|Avg: $1,154 USD|-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 1, 2026
Retailer 5$407 USD
Retailer 12$456 USD
Retailer 3$505 USD
Retailer 16$505 USD
Retailer 15$621 USD
Retailer 11$650 USD
Retailer 6$797 USD
Retailer 9$829 USD
Retailer 10$854 USD
Retailer 7$911 USD
Retailer 13$1,415 USD
Retailer 8$1,438 USD
Retailer 4$1,622 USD
Retailer 2$1,971 USD
Retailer 14$2,280 USD
Brilliant Earth$3,020 USD

39 data points across 16 retailers

16 retailers$407 USD to $3,020 USD

A
Cheapest Retailer
-
$407 USD
A
Retailer 2
-
$456 USD
View
A
Retailer 3
-
$505 USD
View
Retailer 4
-
$505 USD
View
Price last confirmed 7 days ago
Retailer 5
-
$621 USD
£489 GBP
View
Price last confirmed 15 days ago
A
Retailer 6
-
$650 USD
View
B+
Retailer 7
-
$797 USD
View
A
Retailer 8
-
$829 USD
£653 GBP
View
A
Retailer 9
-
$854 USD
€813 EUR
View
A
Retailer 10
-
$911 USD
View
B+
Retailer 11
-
$1,415 USD
View
B+
Retailer 12
-
$1,438 USD
View
B+
Retailer 13
-
$1,622 USD
View
B+
Retailer 14
-
$1,971 USD
£1,552 GBP
View
B
Retailer 15
-
$2,280 USD
View
Most Expensive
B
Brilliant Earth
9368755A · Oct 31
$3,020 USD
View
15 more retailers have this diamond
Prices start from $407 USDSave up to $2,613 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.

A
3.75ct Oval
$407 USD