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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 $283 SGD
$221 USD
As of October 30, 2026
Save $1,405 SGD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,687 SGD at Brilliant Earth · As of October 30, 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 30, 2026, with prices from $283 to $1,687, a $1,405 spread on the same certified stone. Brilliant Earth lists it at $1,687. 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 30
Current: $1,687 SGD|Low: $283 SGD|High: $2,672 SGD|Avg: $867 SGD|-36.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 9$283 SGD
Retailer 5$424 SGD
Retailer 4$518 SGD
Retailer 3$575 SGD
Retailer 10$634 SGD
Retailer 8$744 SGD
Retailer 2$758 SGD
Retailer 6$1,336 SGD
Retailer 7$1,477 SGD
Brilliant Earth$1,687 SGD

43 data points across 10 retailers

13 retailers$283 SGD to $1,687 SGD

A
Cheapest Retailer
-
$283 SGD
$221 USD
Final sale: no returns
B+
Retailer 2
-
$424 SGD
$332 USD
View
A
Retailer 3
-
$518 SGD
€386 EUR
View
A
Retailer 4
-
$575 SGD
£354 GBP
View
A
Retailer 5
-
$634 SGD
$496 USD
View
A
Retailer 6
-
$699 SGD
$547 USD
View
A
Retailer 7
-
$744 SGD
$582 USD
View
A
Retailer 8
-
$758 SGD
$593 USD
View
B
Retailer 9
-
$1,078 SGD
$843 USD
View
Retailer 10
-
$1,336 SGD
$1,045 USD
View
Price last confirmed 10 days ago
B
Retailer 11
-
$1,477 SGD
£910 GBP
View
B
Retailer 12
-
$1,518 SGD
$1,188 USD
View
Most Expensive
B
Brilliant Earth
10789422A · Oct 30
$1,687 SGD
$1,320 USD
View
12 more retailers have this diamond
Prices start from $283 SGDSave up to $1,405 SGD

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
$283 SGD