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Cushion|Lab Grown|IGI

1.80ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG799646975

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

Certificate IGI LG799646975

Diamond specifications and retailer prices

From $802 SGD
$627 USD
As of October 31, 2026
Save $4,350 SGD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,152 SGD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.8ct lab-grown cushion diamond

This 1.8ct 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 LG799646975 or 799646975. Listed at 19 retailers as of October 31, 2026, with prices from $802 to $5,152, a $4,350 spread on the same certified stone. Brilliant Earth lists it at $5,152. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.80
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799646975
Dimensions6.91 × 6.91 × 4.46 mm
L/W Ratio1.00
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
6.91 mm6.91 mm1.80 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799646975
Side View
Table 61.0%Crown 32.6°Girdle: MED-THKPavilion 35.7°Culet: NoneDepth 64.5%

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 31
Current: $5,152 SGD|Low: $802 SGD|High: $7,364 SGD|Avg: $2,372 SGD|-30.0%
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
Retailer 18
November 1, 2026
Retailer 13$802 SGD
Retailer 10$937 SGD
Retailer 2$940 SGD
Retailer 16$1,029 SGD
Retailer 6$1,179 SGD
Retailer 7$1,369 SGD
Retailer 11$1,375 SGD
Retailer 12$1,440 SGD
Retailer 15$1,527 SGD
Retailer 18$1,884 SGD
Retailer 8$2,005 SGD
Retailer 5$2,591 SGD
Retailer 14$2,879 SGD
Retailer 3$2,881 SGD
Retailer 9$2,996 SGD
Retailer 17$3,862 SGD
Retailer 4$4,187 SGD
Brilliant Earth$5,152 SGD

25 data points across 18 retailers

19 retailers$802 SGD to $5,152 SGD

A
Cheapest Retailer
-
$802 SGD
$627 USD
Final sale: no returns
Retailer 2
-
$937 SGD
$733 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
$940 SGD
£579 GBP
View
A
Retailer 4
-
$1,029 SGD
$805 USD
View
A
Retailer 5
-
$1,179 SGD
$922 USD
View
A
Retailer 6
-
$1,369 SGD
$1,071 USD
View
A
Retailer 7
-
$1,375 SGD
£847 GBP
View
A
Retailer 8
-
$1,440 SGD
€1,073 EUR
View
A
Retailer 9
-
$1,527 SGD
ZAR 19,298 ZAR
View
A
Retailer 10
-
$1,884 SGD
$1,474 USD
View
A
Retailer 11
-
$2,005 SGD
$1,568 USD
View
B+
Retailer 12
-
$2,591 SGD
£1,596 GBP
View
B+
Retailer 13
-
$2,879 SGD
$2,252 USD
View
B+
Retailer 14
-
$2,881 SGD
$2,254 USD
View
B+
Retailer 15
-
$2,996 SGD
View
B+
Retailer 16
-
$3,109 SGD
$2,432 USD
View
Retailer 17
-
$3,862 SGD
£2,379 GBP
View
Price last confirmed 7 days ago
B+
Retailer 18
-
$4,187 SGD
$3,275 USD
View
Most Expensive
B
Brilliant Earth
21420167A · Oct 31
$5,152 SGD
$4,030 USD
View
18 more retailers have this diamond
Prices start from $802 SGDSave up to $4,350 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
1.80ct Cushion
$802 SGD