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Round|Lab Grown|IGI

1.40ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG603350381

Shape and cutting style on the report: Round brilliant

Certificate IGI LG603350381

Diamond specifications and retailer prices

From $173 USD
As of October 29, 2026
Save $1,487 USD (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,660 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.4ct lab-grown round diamond

This 1.4ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG603350381 or 603350381. Listed at 10 retailers as of October 29, 2026, with prices from $173 to $1,660, a $1,487 spread on the same certified stone. Do Amore Diamonds lists it at $1,660. 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

1.40
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG603350381
Dimensions7.24 × 7.30 × 4.38 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
7.24 mm7.30 mm1.40 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG603350381
Side View
Table 56.0%Crown 33.1°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.2%

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: Oct 29
Current: $1,660 USD|Low: $140 USD|High: $1,660 USD|Avg: $660 USD|+3.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 6$173 USD
Retailer 8$194 USD
Retailer 4$244 USD
Retailer 7$382 USD
Retailer 10$434 USD
Retailer 11$538 USD
Retailer 9$566 USD
Retailer 3$631 USD
Retailer 5$728 USD
Retailer 12$1,080 USD
Retailer 2$1,113 USD
Do Amore Diamonds$1,660 USD

13 data points across 12 retailers

10 retailers$173 USD to $1,660 USD

A
Cheapest Retailer
-
$173 USD
A
Retailer 2
-
$194 USD
View
Final sale: no returns
A
Retailer 3
-
$200 USD
View
B+
Retailer 4
-
$382 USD
View
Retailer 5
-
$728 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
$760 USD
View
B
Retailer 7
-
$1,080 USD
View
B
Retailer 8
-
$1,113 USD
£876 GBP
View
B
Retailer 9
-
$1,570 USD
View
Most Expensive
B
Do Amore Diamonds
27-F96FD241F · Oct 29
$1,660 USD
View
9 more retailers have this diamond
Prices start from $173 USDSave up to $1,487 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
1.40ct Round
$173 USD