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Cushion|Lab Grown|IGI

1.41ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG515211276

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG515211276

Diamond specifications and retailer prices

From $283 AUD
$199 USD
As of October 30, 2026
Save $1,254 AUD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,537 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.41ct lab-grown cushion diamond

This 1.41ct 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 top-tier cut grade and certified by IGI LG515211276 or 515211276. Listed at 13 retailers as of October 29, 2026, with prices from $283 to $1,537, a $1,254 spread on the same certified stone. Brilliant Earth lists it at $1,537. 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

1.41
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG515211276
Dimensions6.58 × 6.45 × 4.22 mm
L/W Ratio1.02
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
6.58 mm6.45 mm1.41 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG515211276
Side View
Table 65.0%Crown 33.7°Girdle: MED-VTKPavilion 37.9°Culet: NoneDepth 65.4%

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: $1,537 AUD|Low: $283 AUD|High: $1,594 AUD|Avg: $787 AUD|-3.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 13$283 AUD
Retailer 12$315 AUD
Retailer 11$346 AUD
Retailer 6$544 AUD
Retailer 10$557 AUD
Retailer 2$560 AUD
Retailer 9$585 AUD
Retailer 3$678 AUD
Retailer 4$814 AUD
Retailer 5$1,026 AUD
Retailer 8$1,253 AUD
Retailer 7$1,470 AUD
Brilliant Earth$1,537 AUD

44 data points across 13 retailers

13 retailers$283 AUD to $1,537 AUD

A
Cheapest Retailer
-
$283 AUD
$199 USD
Final sale: no returns
A
Retailer 2
-
$315 AUD
$221 USD
View
A
Retailer 3
-
$346 AUD
HK$1,900 HKD
View
A
Retailer 4
-
$544 AUD
€364 EUR
View
B+
Retailer 5
-
$557 AUD
$391 USD
View
A
Retailer 6
-
$560 AUD
£309 GBP
View
Retailer 7
-
$585 AUD
£324 GBP
View
Price last confirmed 17 days ago
A
Retailer 8
-
$678 AUD
$476 USD
View
B+
Retailer 9
-
$814 AUD
$572 USD
View
B
Retailer 10
-
$1,026 AUD
SGD 974 SGD
View
Retailer 11
-
$1,253 AUD
$880 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
$1,470 AUD
£813 GBP
View
Most Expensive
B
Brilliant Earth
19056475A · Oct 29
$1,537 AUD
$1,080 USD
View
12 more retailers have this diamond
Prices start from $283 AUDSave up to $1,254 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.

A
1.41ct Cushion
$283 AUD