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Round|Lab Grown|IGI

1.80ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG497155955

Shape and cutting style on the report: Round brilliant

Certificate IGI LG497155955

Diamond specifications and retailer prices

From $1,819 CAD
$1,300 USD
As of October 29, 2026
Save $2,403 CAD (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,468 CAD at MOH London · As of October 21, 2026
View at MOH London

About this 1.8ct lab-grown round diamond

This 1.8ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG497155955 or 497155955. Listed at 12 retailers as of October 27, 2026, with a 132% 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

1.80
Carat
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497155955
Dimensions7.88 × 7.90 × 4.76 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
7.88 mm7.90 mm1.80 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497155955
Side View
Table 57.5%Crown 33.3°Girdle: THN-MEDPavilion 40.6°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 29
Current: $6,468 CAD|Low: $1,819 CAD|High: $6,520 CAD|Avg: $3,018 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
Retailer 13
October 29, 2026
Retailer 7$1,819 CAD
Retailer 6$1,943 CAD
Retailer 11$2,113 CAD
Retailer 10$2,175 CAD
Retailer 8$2,253 CAD
Retailer 13$2,253 CAD
Retailer 3$2,491 CAD
Retailer 2$2,966 CAD
Retailer 5$3,095 CAD
Retailer 9$3,558 CAD
Retailer 4$4,088 CAD
Retailer 12$4,223 CAD
MOH London$6,468 CAD

23 data points across 13 retailers

12 retailers$1,819 CAD to $4,223 CAD

A
Cheapest Retailer
-
$1,819 CAD
$1,300 USD
A
Retailer 2
-
$1,943 CAD
$1,388 USD
View
B+
Retailer 3
-
$2,113 CAD
$1,510 USD
View
B+
Retailer 4
-
$2,175 CAD
$1,554 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,253 CAD
$1,610 USD
View
Retailer 6
-
$2,253 CAD
$1,610 USD
View
Price last confirmed 17 days ago
B+
Retailer 7
-
$2,491 CAD
$1,780 USD
View
B+
Retailer 8
-
$2,966 CAD
£1,669 GBP
View
B
Retailer 9
-
$3,558 CAD
$2,542 USD
View
B
Retailer 10
-
$4,088 CAD
$2,921 USD
View
B
Retailer 11
-
$4,223 CAD
$3,017 USD
View
Most Expensive
MOH London
LG497155955 · Oct 21
$6,468 CAD
£3,639 GBP
View
Price last confirmed 8 days ago
11 more retailers have this diamond
Prices start from $1,819 CADSave up to $2,403 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
1.80ct Round
$1,819 CAD