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Round|Lab Grown|IGI

10.39ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG623420092

Shape and cutting style on the report: Round brilliant

Certificate IGI LG623420092

Diamond specifications and retailer prices

From $2,067 USD
As of October 29, 2026
Save $11,063 USD (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $13,130 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 10.39ct lab-grown round diamond

This 10.39ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG623420092 or 623420092. Listed at 18 retailers as of October 29, 2026, with prices from $2,067 to $13,130, a $11,063 spread on the same certified stone. Brilliant Earth lists it at $13,130. 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

10.39
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623420092
Dimensions14.20 × 14.16 × 8.42 mm
L/W Ratio1.00
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
14.20 mm14.16 mm10.39 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623420092
Side View
Table 58.0%Crown 32.5°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 59.4%

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: $13,130 USD|Low: $1,984 USD|High: $13,130 USD|Avg: $3,600 USD
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
October 31, 2026
Retailer 12$2,067 USD
Retailer 11$2,146 USD
Retailer 10$2,248 USD
Retailer 5$2,314 USD
Retailer 8$2,397 USD
Retailer 13$2,397 USD
Retailer 4$2,565 USD
Retailer 7$2,891 USD
Retailer 9$3,285 USD
Retailer 15$3,295 USD
Retailer 16$3,497 USD
Retailer 3$3,748 USD
Retailer 2$3,791 USD
Retailer 6$6,817 USD
Retailer 14$7,532 USD
Brilliant Earth$13,130 USD

43 data points across 16 retailers

18 retailers$2,067 USD to $13,130 USD

A
Cheapest Retailer
-
$2,067 USD
A
Retailer 2
-
$2,146 USD
£1,690 GBP
View
A
Retailer 3
-
$2,248 USD
View
A
Retailer 4
-
$2,314 USD
View
Final sale: no returns
Retailer 5
-
$2,397 USD
View
Price last confirmed 20 days ago
A
Retailer 6
-
$2,397 USD
View
A
Retailer 7
-
$2,565 USD
View
A
Retailer 8
-
$2,891 USD
View
B+
Retailer 9
-
$3,285 USD
£2,587 GBP
View
B+
Retailer 10
-
$3,295 USD
View
B+
Retailer 11
-
$3,497 USD
View
Retailer 12
-
$3,748 USD
View
Price last confirmed 12 days ago
B+
Retailer 13
-
$3,791 USD
€3,610 EUR
View
Retailer 14
-
$6,229 USD
View
Price last confirmed 38 days ago
B
Retailer 15
-
$6,817 USD
View
B
Retailer 16
-
$7,532 USD
View
B
Retailer 17
-
$8,385 USD
View
Most Expensive
B
Brilliant Earth
20602535A · Oct 29
$13,130 USD
View
17 more retailers have this diamond
Prices start from $2,067 USDSave up to $11,063 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
10.39ct Round
$2,067 USD