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Round|Lab Grown|IGI

1.51ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG819628770

Shape and cutting style on the report: Round brilliant

Certificate IGI LG819628770

Diamond specifications and retailer prices

From $342 CAD
As of October 30, 2026
Save $1,208 CAD (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,716 CAD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG819628770 or 819628770. Listed at 17 retailers as of October 30, 2026, with a 353% 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

1.51
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819628770
Dimensions7.35 × 7.31 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.35 mm7.31 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819628770
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°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 30
Current: $602 CAD|Low: $272 CAD|High: $1,716 CAD|Avg: $762 CAD|+4.6%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Reve Diamonds
October 31, 2026
Retailer 7$285 CAD
Retailer 15$342 CAD
Retailer 9$352 CAD
Retailer 17$385 CAD
Retailer 3$570 CAD
Retailer 1$602 CAD
Retailer 13$619 CAD
Retailer 2$630 CAD
Retailer 10$673 CAD
Retailer 8$751 CAD
Retailer 14$827 CAD
Retailer 12$965 CAD
Retailer 6$1,061 CAD
Retailer 11$1,175 CAD
Retailer 4$1,249 CAD
Retailer 16$1,550 CAD
Retailer 5$1,656 CAD
Reve Diamonds$1,716 CAD

32 data points across 18 retailers

17 retailers$342 CAD to $1,550 CAD

Retailer 1
-
$285 CAD
Price last confirmed 8 days ago
A
Retailer 2
-
$342 CAD
View
Retailer 3
-
$352 CAD
View
Price last confirmed 10 days ago
Retailer 4
-
$570 CAD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$602 CAD
View
A
Retailer 6
-
$619 CAD
View
B+
Retailer 7
-
$630 CAD
View
A
Retailer 8
-
$673 CAD
View
B+
Retailer 9
-
$751 CAD
View
B+
Retailer 10
-
$827 CAD
View
B+
Retailer 11
-
$965 CAD
View
Retailer 12
-
$1,061 CAD
View
Price last confirmed 12 days ago
B
Retailer 13
-
$1,175 CAD
View
B
Retailer 14
-
$1,249 CAD
View
B
Retailer 15
-
$1,550 CAD
View
Retailer 16
-
$1,656 CAD
View
Price last confirmed 8 days ago
Most Expensive
Reve Diamonds
563078C55 · Oct 30
$1,716 CAD
$1,229 USD
View
Price last confirmed 7 days ago
16 more retailers have this diamond
Prices start from $342 CADSave up to $1,208 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
1.51ct Round
$342 CAD