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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 $2,887 CAD
$2,067 USD
As of October 29, 2026
Save $15,454 CAD (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $18,341 CAD 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 $2,887 to $18,341, a $15,454 spread on the same certified stone. Brilliant Earth lists it at $18,341. 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: $18,341 CAD|Low: $2,771 CAD|High: $18,341 CAD|Avg: $5,029 CAD
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 11$2,887 CAD
Retailer 9$2,997 CAD
Retailer 2$3,140 CAD
Retailer 5$3,232 CAD
Retailer 8$3,348 CAD
Retailer 12$3,348 CAD
Retailer 4$3,583 CAD
Retailer 7$4,038 CAD
Retailer 10$4,589 CAD
Retailer 15$4,603 CAD
Retailer 16$4,885 CAD
Retailer 3$5,236 CAD
Retailer 13$5,311 CAD
Retailer 6$9,523 CAD
Retailer 14$10,521 CAD
Brilliant Earth$18,341 CAD

43 data points across 16 retailers

18 retailers$2,887 CAD to $18,341 CAD

A
Cheapest Retailer
-
$2,887 CAD
$2,067 USD
A
Retailer 2
-
$2,997 CAD
£1,690 GBP
View
A
Retailer 3
-
$3,140 CAD
$2,248 USD
View
A
Retailer 4
-
$3,232 CAD
$2,314 USD
View
Final sale: no returns
Retailer 5
-
$3,348 CAD
$2,397 USD
View
Price last confirmed 19 days ago
A
Retailer 6
-
$3,348 CAD
$2,397 USD
View
A
Retailer 7
-
$3,583 CAD
$2,565 USD
View
A
Retailer 8
-
$4,038 CAD
$2,891 USD
View
B+
Retailer 9
-
$4,589 CAD
£2,587 GBP
View
B+
Retailer 10
-
$4,603 CAD
$3,295 USD
View
B+
Retailer 11
-
$4,885 CAD
$3,497 USD
View
Retailer 12
-
$5,236 CAD
$3,748 USD
View
Price last confirmed 12 days ago
B+
Retailer 13
-
$5,311 CAD
€3,621 EUR
View
Retailer 14
-
$8,702 CAD
$6,229 USD
View
Price last confirmed 37 days ago
B
Retailer 15
-
$9,523 CAD
$6,817 USD
View
B
Retailer 16
-
$10,521 CAD
$7,532 USD
View
B
Retailer 17
-
$11,713 CAD
$8,385 USD
View
Most Expensive
B
Brilliant Earth
20602535A · Oct 29
$18,341 CAD
$13,130 USD
View
17 more retailers have this diamond
Prices start from $2,887 CADSave up to $15,454 CAD

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
$2,887 CAD