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Round|Lab Grown|IGI

1.78ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG573372926

Shape and cutting style on the report: Round brilliant

Certificate IGI LG573372926

Diamond specifications and retailer prices

From $293 CAD
$210 USD
As of October 29, 2026
Save $2,864 CAD (91%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,157 CAD at Jared · As of October 28, 2026
View at Jared

About this 1.78ct lab-grown round diamond

This 1.78ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG573372926 or 573372926. Listed at 11 retailers as of October 28, 2026, with prices from $293 to $3,157, a $2,864 spread on the same certified stone. Jared lists it at $3,157. 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

1.78
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG573372926
Dimensions7.78 × 7.83 × 4.74 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
7.78 mm7.83 mm1.78 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG573372926
Side View
Table 58.5%Crown 33.8°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
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: $1,621 CAD|Low: $243 CAD|High: $2,892 CAD|Avg: $1,126 CAD|-1.7%
Retailer 1
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 12$293 CAD
Retailer 13$332 CAD
Retailer 11$341 CAD
Retailer 10$626 CAD
Retailer 6$743 CAD
Retailer 4$785 CAD
Retailer 5$860 CAD
Retailer 3$967 CAD
Retailer 7$1,176 CAD
Retailer 8$1,294 CAD
Retailer 1$1,621 CAD
Retailer 2$2,026 CAD
Retailer 9$2,822 CAD

36 data points across 13 retailers

11 retailers$293 CAD to $3,157 CAD

A
Cheapest Retailer
-
$293 CAD
$210 USD
A
Retailer 2
-
$332 CAD
$238 USD
View
Final sale: no returns
A
Retailer 3
-
$341 CAD
$244 USD
View
B+
Retailer 4
-
$626 CAD
$448 USD
View
A
Retailer 5
-
$743 CAD
£419 GBP
View
B+
Retailer 6
-
$1,176 CAD
$842 USD
View
B+
Retailer 7
-
$1,294 CAD
$926 USD
View
B
Retailer 8
-
$1,621 CAD
£914 GBP
View
B
Retailer 9
-
$2,026 CAD
$1,450 USD
View
B
Retailer 10
-
$2,822 CAD
$2,020 USD
View
Most Expensive
B
Jared
150062141 · Oct 28
$3,157 CAD
$2,260 USD
View
10 more retailers have this diamond
Prices start from $293 CADSave up to $2,864 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
1.78ct Round
$293 CAD