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Cushion|Lab Grown|IGI

1.61ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG544280403

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG544280403

Diamond specifications and retailer prices

From $314 AUD
$221 USD
As of October 28, 2026
Save $2,658 AUD (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,972 AUD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.61ct lab-grown cushion diamond

This 1.61ct lab-grown cushion 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 LG544280403 or 544280403. Listed at 13 retailers as of October 28, 2026, with prices from $314 to $2,972, a $2,658 spread on the same certified stone. Brilliant Earth lists it at $2,972. 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

1.61
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle28.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG544280403
Dimensions7.72 × 6.20 × 3.88 mm
L/W Ratio1.25
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
7.72 mm6.20 mm1.61 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG544280403
Side View
Table 64.0%Crown 33.6°Girdle: MED-THKPavilion 28.2°Culet: NoneDepth 62.6%

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 28
Current: $2,972 AUD|Low: $314 AUD|High: $2,972 AUD|Avg: $962 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 9$314 AUD
Retailer 3$472 AUD
Retailer 2$576 AUD
Retailer 4$638 AUD
Retailer 10$705 AUD
Retailer 8$828 AUD
Retailer 7$892 AUD
Retailer 5$1,486 AUD
Retailer 6$1,643 AUD
Brilliant Earth$2,972 AUD

42 data points across 10 retailers

13 retailers$314 AUD to $2,972 AUD

A
Cheapest Retailer
-
$314 AUD
$221 USD
Final sale: no returns
B+
Retailer 2
-
$472 AUD
$332 USD
View
A
Retailer 3
-
$576 AUD
€386 EUR
View
A
Retailer 4
-
$638 AUD
£353 GBP
View
A
Retailer 5
-
$705 AUD
$496 USD
View
A
Retailer 6
-
$778 AUD
$547 USD
View
A
Retailer 7
-
$828 AUD
$582 USD
View
B+
Retailer 8
-
$892 AUD
$627 USD
View
B+
Retailer 9
-
$1,199 AUD
$843 USD
View
B+
Retailer 10
-
$1,486 AUD
$1,045 USD
View
Price last confirmed 8 days ago
B
Retailer 11
-
$1,643 AUD
£910 GBP
View
B
Retailer 12
-
$1,689 AUD
$1,188 USD
View
Most Expensive
B
Brilliant Earth
10789422A · Oct 28
$2,972 AUD
$2,090 USD
View
12 more retailers have this diamond
Prices start from $314 AUDSave up to $2,658 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
1.61ct Cushion
$314 AUD