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Cushion|Lab Grown|IGI

1.89ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG718507117

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG718507117

Diamond specifications and retailer prices

From $637 SGD
$498 USD
As of October 30, 2026
Save $4,247 SGD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,883 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG718507117 or 718507117. Listed at 13 retailers as of October 30, 2026, with prices from $637 to $4,883, a $4,247 spread on the same certified stone. Brilliant Earth lists it at $4,883. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle42.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG718507117
Dimensions8.33 × 6.50 × 4.57 mm
L/W Ratio1.28
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
8.33 mm6.50 mm1.89 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG718507117
Side View
Table 58.0%Crown 34°Girdle: STK-THKPavilion 42.1°Culet: NoneDepth 70.3%

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: $4,883 SGD|Low: $455 SGD|High: $7,197 SGD|Avg: $2,509 SGD|-32.1%
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
October 31, 2026
Retailer 5$637 SGD
Retailer 9$857 SGD
Retailer 3$927 SGD
Retailer 11$1,016 SGD
Retailer 7$1,115 SGD
Retailer 4$1,575 SGD
Retailer 6$1,651 SGD
Retailer 12$1,894 SGD
Retailer 8$2,619 SGD
Retailer 2$4,132 SGD
Retailer 13$4,187 SGD
Retailer 10$4,602 SGD
Brilliant Earth$4,883 SGD

34 data points across 13 retailers

13 retailers$637 SGD to $4,883 SGD

A
Cheapest Retailer
-
$637 SGD
$498 USD
Final sale: no returns
A
Retailer 2
-
$857 SGD
$670 USD
View
A
Retailer 3
-
$927 SGD
$725 USD
View
A
Retailer 4
-
$1,016 SGD
$795 USD
View
A
Retailer 5
-
$1,115 SGD
€831 EUR
View
A
Retailer 6
-
$1,575 SGD
$1,232 USD
View
A
Retailer 7
-
$1,651 SGD
A$1,987 AUD
View
A
Retailer 8
-
$1,894 SGD
$1,481 USD
View
B+
Retailer 9
-
$2,619 SGD
£1,613 GBP
View
B+
Retailer 10
-
$4,132 SGD
A$4,972 AUD
View
Retailer 11
-
$4,187 SGD
$3,275 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
$4,602 SGD
$3,600 USD
View
Most Expensive
B
Brilliant Earth
14895653Y · Oct 30
$4,883 SGD
$3,820 USD
View
12 more retailers have this diamond
Prices start from $637 SGDSave up to $4,247 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
$637 SGD