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Round|Lab Grown|IGI

1.58ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG12378004

Shape and cutting style on the report: Round brilliant

Certificate IGI LG12378004

Diamond specifications and retailer prices

From $479 CAD
$341 USD
As of October 29, 2026
Save $3,777 CAD (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,256 CAD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.58ct lab-grown round diamond

This 1.58ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG12378004 or 12378004. Listed at 18 retailers as of October 29, 2026, with prices from $479 to $4,256, a $3,777 spread on the same certified stone. Do Amore Diamonds lists it at $4,256. 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

1.58
Carat
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12378004
Dimensions7.42 × 7.47 × 4.64 mm
L/W Ratio1.01
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process.
Top View
7.42 mm7.47 mm1.58 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12378004
Side View
Table 59.0%Crown 35.5°Girdle: MED-UNDPavilion 41.4°Culet: NoneDepth 62.2%

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: $4,256 CAD|Low: $479 CAD|High: $4,256 CAD|Avg: $1,374 CAD
Do Amore Diamonds
Retailer 2
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 18
October 29, 2026
Retailer 16$479 CAD
Retailer 13$556 CAD
Retailer 4$594 CAD
Retailer 12$594 CAD
Retailer 9$653 CAD
Retailer 17$711 CAD
Retailer 5$808 CAD
Retailer 6$948 CAD
Retailer 8$1,025 CAD
Retailer 14$1,063 CAD
Retailer 11$1,065 CAD
Retailer 10$1,165 CAD
Retailer 15$1,743 CAD
Retailer 7$1,794 CAD
Retailer 3$2,108 CAD
Retailer 18$2,327 CAD
Retailer 2$2,576 CAD
Do Amore Diamonds$4,256 CAD

13 data points across 18 retailers

18 retailers$479 CAD to $4,256 CAD

A
Cheapest Retailer
-
$479 CAD
$341 USD
A
Retailer 2
-
$556 CAD
$396 USD
View
A
Retailer 3
-
$594 CAD
$423 USD
View
A
Retailer 4
-
$594 CAD
$423 USD
View
B+
Retailer 5
-
$653 CAD
$465 USD
View
A
Retailer 6
-
$711 CAD
$506 USD
View
A
Retailer 7
-
$808 CAD
$575 USD
View
A
Retailer 8
-
$948 CAD
$675 USD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$1,025 CAD
$730 USD
View
A
Retailer 10
-
$1,063 CAD
$757 USD
View
A
Retailer 11
-
$1,065 CAD
£597 GBP
View
A
Retailer 12
-
$1,165 CAD
$829 USD
View
A
Retailer 13
-
$1,743 CAD
$1,241 USD
View
A
Retailer 14
-
$1,794 CAD
$1,277 USD
View
B+
Retailer 15
-
$2,108 CAD
$1,501 USD
View
B+
Retailer 16
-
$2,327 CAD
$1,657 USD
View
B+
Retailer 17
-
$2,576 CAD
£1,444 GBP
View
Most Expensive
B
Do Amore Diamonds
27-9CA57A5A7 · Oct 29
$4,256 CAD
$3,030 USD
View
17 more retailers have this diamond
Prices start from $479 CADSave up to $3,777 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
1.58ct Round
$479 CAD