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Round|Lab Grown|IGI

4.90ct F SI2 Round Lab Grown Diamond

ID • F/SI2 • IGI LG626469657

Shape and cutting style on the report: Round brilliant

Certificate IGI LG626469657

Diamond specifications and retailer prices

From $508 USD
As of October 26, 2026
Save $2,526 USD (83%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,210 USD at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 4.9ct lab-grown round diamond

This 4.9ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG626469657 or 626469657. Listed at 7 retailers as of October 26, 2026, with a 497% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.90
Carat
F
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG626469657
Dimensions10.89 × 10.82 × 6.72 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
10.89 mm10.82 mm4.90 ctF / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG626469657
Side View
Table 60.0%Crown 34.3°Girdle: MediumPavilion 41.5°Culet: NoneDepth 61.9%

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 26
Current: $3,210 USD|Low: $508 USD|High: $6,060 USD|Avg: $2,299 USD|-7.3%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 8$508 USD
Retailer 7$569 USD
Retailer 6$977 USD
Retailer 9$1,190 USD
Retailer 10$1,309 USD
Retailer 4$1,625 USD
Retailer 5$1,828 USD
Retailer 11$3,021 USD
Retailer 2$3,034 USD
Rare Carat$3,210 USD
Retailer 3$6,060 USD

16 data points across 11 retailers

7 retailers$508 USD to $3,034 USD

A
Cheapest Retailer
-
$508 USD
Retailer 2
-
$569 USD
View
Price last confirmed 9 days ago
B+
Retailer 3
-
$977 USD
View
B+
Retailer 4
-
$1,625 USD
View
B+
Retailer 5
-
$1,828 USD
View
B
Retailer 6
-
$3,034 USD
£2,389 GBP
View
Most Expensive
Rare Carat
LGDRD400-02817 · Oct 21
$3,210 USD
View
Price last confirmed 12 days ago
6 more retailers have this diamond
Prices start from $508 USDSave up to $2,526 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
4.90ct Round
$508 USD