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Round|Lab Grown|IGI

3.54ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG620450105

Shape and cutting style on the report: Round brilliant

Certificate IGI LG620450105

Diamond specifications and retailer prices

From $408 USD
As of October 26, 2026
Save $3,212 USD (89%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,620 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 3.54ct lab-grown round diamond

This 3.54ct 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 LG620450105 or 620450105. Listed at 10 retailers as of October 26, 2026, with prices from $408 to $3,620, a $3,212 spread on the same certified stone. Do Amore Diamonds lists it at $3,620. 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

3.54
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620450105
Dimensions9.75 × 9.70 × 5.99 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
9.75 mm9.70 mm3.54 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620450105
Side View
Table 57.0%Crown 34.6°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.6%

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: Oct 26
Current: $3,620 USD|Low: $338 USD|High: $4,580 USD|Avg: $1,596 USD|-3.5%
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
Retailer 13
Retailer 14
Retailer 15
October 29, 2026
Retailer 14$408 USD
Retailer 9$457 USD
Retailer 15$473 USD
Retailer 13$799 USD
Retailer 8$800 USD
Retailer 7$991 USD
Retailer 3$1,007 USD
Retailer 6$1,052 USD
Retailer 4$1,331 USD
Retailer 11$1,418 USD
Retailer 12$1,794 USD
Retailer 10$1,850 USD
Retailer 2$2,061 USD
Do Amore Diamonds$3,620 USD
Retailer 5$4,580 USD

20 data points across 15 retailers

10 retailers$408 USD to $3,620 USD

A
Cheapest Retailer
-
$408 USD
A
Retailer 2
-
$457 USD
View
A
Retailer 3
-
$473 USD
View
Final sale: no returns
B+
Retailer 4
-
$799 USD
View
A
Retailer 5
-
$800 USD
View
B
Retailer 6
-
$1,418 USD
View
B
Retailer 7
-
$1,794 USD
View
B
Retailer 8
-
$1,850 USD
View
B
Retailer 9
-
$2,061 USD
£1,623 GBP
View
Most Expensive
B
Do Amore Diamonds
27-A422448BA · Oct 29
$3,620 USD
View
9 more retailers have this diamond
Prices start from $408 USDSave up to $3,212 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
3.54ct Round
$408 USD