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Cushion|Lab Grown|IGI

1.30ct D SI1 Cushion Lab Grown Diamond

GD • D/SI1 • IGI LG570350845

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG570350845

Diamond specifications and retailer prices

From $658 CAD
$471 USD
As of October 30, 2026
Save $2,032 CAD (76%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,689 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 1.3ct lab-grown cushion diamond

This 1.3ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG570350845 or 570350845. Listed at 8 retailers as of October 29, 2026, with prices from $658 to $2,689, a $2,032 spread on the same certified stone. MOH London lists it at $2,689. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.30
Carat
D
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG570350845
Dimensions6.27 × 6.25 × 4.27 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
6.27 mm6.25 mm1.30 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG570350845
Side View
Table 60.5%Crown 37.8°Girdle: MED-THKPavilion 39.5°Culet: NoneDepth 68.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,689 CAD|Low: $469 CAD|High: $2,707 CAD|Avg: $1,191 CAD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 7$658 CAD
Retailer 8$814 CAD
Retailer 4$817 CAD
Retailer 3$1,121 CAD
Retailer 6$1,148 CAD
Retailer 2$1,190 CAD
Retailer 5$1,390 CAD
MOH London$2,689 CAD

42 data points across 8 retailers

8 retailers$658 CAD to $2,689 CAD

B+
Cheapest Retailer
-
$658 CAD
$471 USD
Final sale: no returns
B+
Retailer 2
-
$814 CAD
$583 USD
View
B+
Retailer 3
-
$817 CAD
$585 USD
View
B
Retailer 4
-
$1,121 CAD
€764 EUR
View
B
Retailer 5
-
$1,148 CAD
$822 USD
View
B
Retailer 6
-
$1,190 CAD
£671 GBP
View
B
Retailer 7
-
$1,390 CAD
$995 USD
View
Most Expensive
B
MOH London
LG570350845 · Oct 29
$2,689 CAD
£1,516 GBP
View
7 more retailers have this diamond
Prices start from $658 CADSave up to $2,032 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.

B+
1.30ct Cushion
$658 CAD