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Round|Lab Grown|IGI

1.81ct I SI2 Round Lab Grown Diamond

ID • I/SI2 • IGI LG436046555

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436046555

Diamond specifications and retailer prices

From $1,819 CAD
$1,300 USD
As of October 29, 2026
Save $5,059 CAD (74%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,879 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 1.81ct lab-grown round diamond

This 1.81ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436046555 or 436046555. Listed at 10 retailers as of October 29, 2026, with prices from $1,819 to $6,879, a $5,059 spread on the same certified stone. MOH London lists it at $6,879. 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

1.81
Carat
I
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046555
Dimensions7.84 × 7.81 × 4.84 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.84 mm7.81 mm1.81 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436046555
Side View
Table 55.5%Crown 32.9°Girdle: ThickPavilion 41.1°Culet: NoneDepth 61.8%

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 29
Current: $6,879 CAD|Low: $1,650 CAD|High: $6,934 CAD|Avg: $3,400 CAD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 19, 2026
Retailer 5$1,819 CAD
Retailer 2$2,066 CAD
Retailer 8$2,246 CAD
Retailer 10$2,312 CAD
Retailer 6$2,396 CAD
Retailer 3$2,648 CAD
Retailer 12$3,265 CAD
Retailer 7$3,778 CAD
Retailer 11$4,349 CAD
Retailer 9$4,490 CAD
Retailer 4$5,363 CAD
MOH London$6,879 CAD

14 data points across 12 retailers

10 retailers$1,819 CAD to $6,879 CAD

A
Cheapest Retailer
-
$1,819 CAD
$1,300 USD
A
Retailer 2
-
$2,066 CAD
$1,476 USD
View
B+
Retailer 3
-
$2,246 CAD
$1,605 USD
View
B+
Retailer 4
-
$2,312 CAD
$1,652 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,396 CAD
$1,712 USD
View
Retailer 6
-
$2,396 CAD
$1,712 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
$3,778 CAD
$2,699 USD
View
B
Retailer 8
-
$4,349 CAD
$3,107 USD
View
B
Retailer 9
-
$4,490 CAD
$3,208 USD
View
Most Expensive
B
MOH London
LG436046555 · Oct 29
$6,879 CAD
£3,870 GBP
View
9 more retailers have this diamond
Prices start from $1,819 CADSave up to $5,059 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
1.81ct Round
$1,819 CAD