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Cushion|Lab Grown|IGI

1.89ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846662378

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846662378

Diamond specifications and retailer prices

From $913 SGD
£562 GBP
As of October 30, 2026
Save $4,508 SGD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,420 SGD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.89ct lab-grown cushion diamond

This 1.89ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846662378 or 846662378. Listed at 11 retailers as of October 30, 2026, with prices from $913 to $5,420, a $4,508 spread on the same certified stone. Brilliant Earth lists it at $5,420. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.89
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662378
Dimensions7.98 × 6.63 × 4.57 mm
L/W Ratio1.20
Girdle conditionFaceted
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
7.98 mm6.63 mm1.89 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662378
Side View
Table 61.0%Crown 35.4°Girdle: STK-THKPavilion 37.7°Culet: NoneDepth 68.9%

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: $5,420 SGD|Low: $913 SGD|High: $5,420 SGD|Avg: $2,683 SGD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 9$913 SGD
Retailer 2$1,036 SGD
Retailer 6$1,042 SGD
Retailer 8$1,328 SGD
Retailer 10$2,032 SGD
Retailer 5$2,093 SGD
Retailer 7$2,983 SGD
Retailer 4$3,140 SGD
Retailer 11$4,293 SGD
Retailer 3$4,692 SGD
Brilliant Earth$5,420 SGD

15 data points across 11 retailers

11 retailers$913 SGD to $5,420 SGD

A
Cheapest Retailer
-
$913 SGD
£562 GBP
A
Retailer 2
-
$1,036 SGD
$810 USD
View
A
Retailer 3
-
$1,042 SGD
$815 USD
View
A
Retailer 4
-
$1,328 SGD
$1,039 USD
View
A
Retailer 5
-
$2,032 SGD
€1,514 EUR
View
A
Retailer 6
-
$2,093 SGD
$1,637 USD
View
B+
Retailer 7
-
$2,983 SGD
$2,333 USD
View
B+
Retailer 8
-
$3,140 SGD
$2,456 USD
View
B+
Retailer 9
-
$4,293 SGD
£2,644 GBP
View
Retailer 10
-
$4,692 SGD
$3,670 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
22155369A · Oct 30
$5,420 SGD
$4,240 USD
View
10 more retailers have this diamond
Prices start from $913 SGDSave up to $4,508 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
1.89ct Cushion
$913 SGD