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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 $221 USD
As of October 30, 2026
Save $1,099 USD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,320 USD 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 $221 to $1,320, a $1,099 spread on the same certified stone. Brilliant Earth lists it at $1,320. 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
Color
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: $1,320 USD|Low: $221 USD|High: $2,090 USD|Avg: $676 USD|-36.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 9$221 USD
Retailer 4$332 USD
Retailer 3$405 USD
Retailer 2$450 USD
Retailer 10$496 USD
Retailer 8$582 USD
Retailer 7$627 USD
Retailer 5$1,045 USD
Retailer 6$1,156 USD
Brilliant Earth$1,320 USD

43 data points across 10 retailers

13 retailers$221 USD to $1,320 USD

A
Cheapest Retailer
-
$221 USD
Final sale: no returns
B+
Retailer 2
-
$332 USD
View
A
Retailer 3
-
$405 USD
€386 EUR
View
A
Retailer 4
-
$450 USD
£354 GBP
View
A
Retailer 5
-
$496 USD
View
A
Retailer 6
-
$547 USD
View
A
Retailer 7
-
$582 USD
View
B+
Retailer 8
-
$627 USD
View
B
Retailer 9
-
$843 USD
View
Retailer 10
-
$1,045 USD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$1,156 USD
£910 GBP
View
B
Retailer 12
-
$1,188 USD
View
Most Expensive
B
Brilliant Earth
10789422A · Oct 30
$1,320 USD
View
12 more retailers have this diamond
Prices start from $221 USDSave up to $1,099 USD

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
$221 USD