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Cushion|Lab Grown|IGI

1.88ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG811638305

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG811638305

Diamond specifications and retailer prices

From $960 SGD
$751 USD
As of October 30, 2026
Save $4,422 SGD (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,964 SGD at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 1.88ct lab-grown cushion diamond

This 1.88ct 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 LG811638305 or 811638305. Listed at 19 retailers as of October 30, 2026, with a 461% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.88
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638305
Dimensions7.11 × 7.01 × 4.60 mm
L/W Ratio1.01
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
7.11 mm7.01 mm1.88 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638305
Side View
Table 62.0%Crown 34.7°Girdle: MED-STKPavilion 36.6°Culet: NoneDepth 65.6%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $5,382 SGD|Low: $881 SGD|High: $7,696 SGD|Avg: $2,877 SGD|-30.1%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 15$960 SGD
Retailer 9$963 SGD
Retailer 10$1,138 SGD
Retailer 16$1,497 SGD
Retailer 2$1,530 SGD
Retailer 12$1,647 SGD
Retailer 14$1,679 SGD
Retailer 17$2,056 SGD
Retailer 6$2,114 SGD
Retailer 5$2,844 SGD
Retailer 3$3,156 SGD
Retailer 11$3,335 SGD
Retailer 7$3,472 SGD
Retailer 13$4,263 SGD
Retailer 8$4,660 SGD
Retailer 4$4,894 SGD
Brilliant Earth$5,382 SGD

27 data points across 17 retailers

19 retailers$960 SGD to $5,382 SGD

A+
Cheapest Retailer
-
$960 SGD
$751 USD
Final sale: no returns
Retailer 2
-
$963 SGD
$753 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
$1,138 SGD
$890 USD
View
A
Retailer 4
-
$1,497 SGD
$1,171 USD
View
A
Retailer 5
-
$1,530 SGD
£942 GBP
View
A
Retailer 6
-
$1,647 SGD
€1,227 EUR
View
A
Retailer 7
-
$1,679 SGD
ZAR 21,214 ZAR
View
A
Retailer 8
-
$2,056 SGD
$1,608 USD
View
A
Retailer 9
-
$2,114 SGD
$1,654 USD
View
B+
Retailer 10
-
$2,844 SGD
£1,752 GBP
View
B+
Retailer 11
-
$2,993 SGD
$2,341 USD
View
B+
Retailer 12
-
$3,156 SGD
$2,469 USD
View
B+
Retailer 13
-
$3,335 SGD
$2,609 USD
View
B+
Retailer 14
-
$3,472 SGD
View
B+
Retailer 15
-
$4,263 SGD
£2,626 GBP
View
Retailer 16
-
$4,660 SGD
$3,645 USD
View
Price last confirmed 10 days ago
B+
Retailer 17
-
$4,894 SGD
$3,828 USD
View
B
Retailer 18
-
$5,382 SGD
$4,210 USD
View
Most Expensive
Brilliant Earth
20988015A · Sep 28
$7,964 SGD
$6,230 USD
View
Price last confirmed 33 days ago
18 more retailers have this diamond
Prices start from $960 SGDSave up to $4,422 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+
1.88ct Cushion
$960 SGD