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Round|Lab Grown|IGI

12.85ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG581343784

Shape and cutting style on the report: Round brilliant

Certificate IGI LG581343784

Diamond specifications and retailer prices

From $2,170 CAD
£1,223 GBP
As of October 30, 2026
Save $9,446 CAD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $11,617 CAD at Adiamor · As of October 31, 2026
View at Adiamor

About this 12.85ct lab-grown round diamond

This 12.85ct lab-grown round sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG581343784 or 581343784. Listed at 11 retailers as of October 30, 2026, with prices from $2,170 to $11,617, a $9,446 spread on the same certified stone. Adiamor lists it at $11,617. 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

12.85
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG581343784
Dimensions15.16 × 15.26 × 9.19 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
15.16 mm15.26 mm12.85 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG581343784
Side View
Table 57.0%Crown 34°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.4%

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 30
Current: $11,617 CAD|Low: $2,170 CAD|High: $36,474 CAD|Avg: $9,343 CAD
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 6$2,170 CAD
Retailer 8$2,323 CAD
Retailer 13$2,695 CAD
Retailer 9$2,933 CAD
Retailer 12$3,165 CAD
Retailer 11$3,537 CAD
Retailer 7$3,803 CAD
Retailer 10$4,289 CAD
Retailer 2$4,645 CAD
Retailer 3$5,050 CAD
Adiamor$11,617 CAD
Retailer 5$26,793 CAD
Retailer 4$36,474 CAD

4 data points across 13 retailers

11 retailers$2,170 CAD to $11,617 CAD

A
Cheapest Retailer
-
$2,170 CAD
£1,223 GBP
A
Retailer 2
-
$2,323 CAD
$1,663 USD
View
A
Retailer 3
-
$2,695 CAD
$1,929 USD
View
A
Retailer 4
-
$2,933 CAD
$2,100 USD
View
A
Retailer 5
-
$3,165 CAD
HK$17,700 HKD
View
A
Retailer 6
-
$3,537 CAD
$2,532 USD
View
A
Retailer 7
-
$3,803 CAD
£2,144 GBP
View
A
Retailer 8
-
$4,289 CAD
€2,924 EUR
View
A
Retailer 9
-
$4,645 CAD
$3,325 USD
View
B+
Retailer 10
-
$5,050 CAD
$3,615 USD
View
Most Expensive
B
Adiamor
D-82828535 · Oct 31
$11,617 CAD
$8,316 USD
View
10 more retailers have this diamond
Prices start from $2,170 CADSave up to $9,446 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
12.85ct Round
$2,170 CAD