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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 $671 AUD
$471 USD
As of November 1, 2026
Save $2,070 AUD (76%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,741 AUD 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 $671 to $2,741, a $2,070 spread on the same certified stone. MOH London lists it at $2,741. 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
Colour
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: Nov 1
Current: $2,741 AUD|Low: $478 AUD|High: $2,759 AUD|Avg: $1,225 AUD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 7$671 AUD
Retailer 8$830 AUD
Retailer 4$833 AUD
Retailer 3$1,133 AUD
Retailer 6$1,170 AUD
Retailer 2$1,213 AUD
Retailer 5$1,416 AUD
MOH London$2,741 AUD

41 data points across 8 retailers

8 retailers$671 AUD to $2,741 AUD

B+
Cheapest Retailer
-
$671 AUD
$471 USD
Final sale: no returns
B+
Retailer 2
-
$830 AUD
$583 USD
View
B+
Retailer 3
-
$833 AUD
$585 USD
View
B
Retailer 4
-
$1,133 AUD
€758 EUR
View
B
Retailer 5
-
$1,170 AUD
$822 USD
View
B
Retailer 6
-
$1,213 AUD
£671 GBP
View
B
Retailer 7
-
$1,416 AUD
$995 USD
View
Most Expensive
B
MOH London
LG570350845 · Oct 29
$2,741 AUD
£1,516 GBP
View
7 more retailers have this diamond
Prices start from $671 AUDSave up to $2,070 AUD

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
$671 AUD