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Round|Lab Grown|IGI

1.58ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG12255716

Shape and cutting style on the report: Round brilliant

Certificate IGI LG12255716

Diamond specifications and retailer prices

From $577 CAD
$413 USD
As of October 30, 2026
Save $2,003 CAD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,288 CAD at Do Amore Diamonds · As of October 31, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG12255716 or 12255716. Listed at 14 retailers as of October 30, 2026, with a 347% 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

1.58
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12255716
Dimensions7.57 × 7.53 × 4.53 mm
L/W Ratio1.01
Culet sizePointed
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
7.57 mm7.53 mm1.58 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12255716
Side View
Table 60.5%Crown 34°Girdle: MED-UNDPavilion 40.9°Culet: NoneDepth 60.0%

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 30
Current: $4,288 CAD|Low: $404 CAD|High: $4,288 CAD|Avg: $1,516 CAD|+37.1%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 9$404 CAD
Retailer 5$577 CAD
Retailer 6$961 CAD
Retailer 3$1,181 CAD
Retailer 8$1,182 CAD
Retailer 4$1,753 CAD
Retailer 10$1,854 CAD
Retailer 7$2,338 CAD
Retailer 2$2,579 CAD
Do Amore Diamonds$4,288 CAD

30 data points across 10 retailers

14 retailers$577 CAD to $2,579 CAD

Retailer 1
-
$325 CAD
$233 USD
Price last confirmed 40 days ago
Retailer 2
-
$377 CAD
$270 USD
View
Price last confirmed 40 days ago
Retailer 3
-
$398 CAD
$285 USD
View
Price last confirmed 40 days ago
A
Retailer 4
-
$577 CAD
$413 USD
View
B+
Retailer 5
-
$810 CAD
$580 USD
View
B
Retailer 6
-
$961 CAD
$688 USD
View
B
Retailer 7
-
$1,181 CAD
£666 GBP
View
B
Retailer 8
-
$1,182 CAD
$846 USD
View
Retailer 9
-
$1,430 CAD
$1,024 USD
View
Price last confirmed 41 days ago
B
Retailer 10
-
$1,753 CAD
$1,255 USD
View
B
Retailer 11
-
$1,854 CAD
$1,327 USD
View
B
Retailer 12
-
$2,338 CAD
$1,674 USD
View
C
Retailer 13
-
$2,579 CAD
£1,454 GBP
View
Most Expensive
Do Amore Diamonds
27-42F31B056 · Oct 31
$4,288 CAD
$3,070 USD
View
Price under review
13 more retailers have this diamond
Prices start from $577 CADSave up to $2,003 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
$577 CAD