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Cushion|Lab Grown|IGI

1.51ct G IF Cushion Lab Grown Diamond

ID • G/IF • IGI LG816616233

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816616233

Diamond specifications and retailer prices

From $700 CAD
$501 USD
As of October 25, 2026
Save $2,330 CAD (77%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,030 CAD at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816616233 or 816616233. Listed at 17 retailers as of October 25, 2026, with prices from $700 to $3,030, a $2,330 spread on the same certified stone. Helzberg Diamonds lists it at $3,030. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
G
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816616233
Dimensions8.56 × 5.85 × 3.86 mm
L/W Ratio1.46
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
8.56 mm5.85 mm1.51 ctG / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816616233
Side View
Table 59.0%Crown 35.4°Girdle: MED-THKPavilion 36.4°Culet: NoneDepth 66.0%

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 25
Current: $3,030 CAD|Low: $700 CAD|High: $3,047 CAD|Avg: $1,796 CAD|-0.6%
Helzberg Diamonds
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
October 31, 2026
Retailer 8$700 CAD
Retailer 11$742 CAD
Retailer 3$1,062 CAD
Retailer 4$1,108 CAD
Retailer 13$1,124 CAD
Retailer 10$1,150 CAD
Retailer 15$1,203 CAD
Retailer 5$1,337 CAD
Retailer 12$1,630 CAD
Retailer 16$1,687 CAD
Retailer 6$2,226 CAD
Retailer 7$2,300 CAD
Retailer 17$2,340 CAD
Retailer 2$2,435 CAD
Retailer 14$2,750 CAD
Retailer 9$2,961 CAD
Helzberg Diamonds$3,030 CAD

31 data points across 17 retailers

17 retailers$700 CAD to $3,030 CAD

A
Cheapest Retailer
-
$700 CAD
$501 USD
A
Retailer 2
-
$742 CAD
£418 GBP
View
A
Retailer 3
-
$1,062 CAD
$760 USD
View
A
Retailer 4
-
$1,108 CAD
$793 USD
View
A
Retailer 5
-
$1,124 CAD
€766 EUR
View
A
Retailer 6
-
$1,150 CAD
£648 GBP
View
A
Retailer 7
-
$1,203 CAD
ZAR 13,911 ZAR
View
A
Retailer 8
-
$1,337 CAD
$957 USD
View
A
Retailer 9
-
$1,630 CAD
A$1,795 AUD
View
A
Retailer 10
-
$1,687 CAD
$1,208 USD
View
B+
Retailer 11
-
$2,226 CAD
SGD 2,153 SGD
View
B+
Retailer 12
-
$2,300 CAD
$1,646 USD
View
Retailer 13
-
$2,340 CAD
$1,675 USD
View
Price last confirmed 12 days ago
B+
Retailer 14
-
$2,435 CAD
$1,743 USD
View
B+
Retailer 15
-
$2,750 CAD
£1,550 GBP
View
B+
Retailer 16
-
$2,961 CAD
$2,120 USD
View
Most Expensive
B+
Helzberg Diamonds
ZXZOHMMHMIJJ · Oct 31
$3,030 CAD
$2,169 USD
View
16 more retailers have this diamond
Prices start from $700 CADSave up to $2,330 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 Cushion
$700 CAD