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Cushion|Lab Grown|IGI

1.51ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG770641066

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG770641066

Diamond specifications and retailer prices

From $533 SGD
$417 USD
As of October 31, 2026
Save $2,586 SGD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,119 SGD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG770641066 or 770641066. Listed at 19 retailers as of October 30, 2026, with prices from $533 to $3,119, a $2,586 spread on the same certified stone. Brilliant Earth lists it at $3,119. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.6°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770641066
Dimensions7.11 × 6.87 × 4.30 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.11 mm6.87 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG770641066
Side View
Table 56.0%Crown 38.6°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 62.6%

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: $3,119 SGD|Low: $528 SGD|High: $4,449 SGD|Avg: $1,585 SGD|-29.9%
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 2$533 SGD
Retailer 4$592 SGD
Retailer 11$611 SGD
Retailer 15$735 SGD
Retailer 3$915 SGD
Retailer 6$945 SGD
Retailer 14$1,017 SGD
Retailer 10$1,069 SGD
Retailer 12$1,087 SGD
Retailer 17$1,332 SGD
Retailer 5$1,483 SGD
Retailer 8$1,952 SGD
Retailer 9$2,166 SGD
Retailer 7$2,233 SGD
Retailer 13$2,325 SGD
Retailer 16$2,998 SGD
Brilliant Earth$3,119 SGD

35 data points across 17 retailers

19 retailers$533 SGD to $3,119 SGD

A
Cheapest Retailer
-
$533 SGD
$417 USD
Final sale: no returns
A
Retailer 2
-
$592 SGD
$463 USD
View
A
Retailer 3
-
$611 SGD
£376 GBP
View
A
Retailer 4
-
$735 SGD
$575 USD
View
A
Retailer 5
-
$915 SGD
$716 USD
View
A
Retailer 6
-
$945 SGD
$739 USD
View
A
Retailer 7
-
$1,017 SGD
ZAR 12,852 ZAR
View
A
Retailer 8
-
$1,069 SGD
£659 GBP
View
A
Retailer 9
-
$1,087 SGD
€810 EUR
View
A
Retailer 10
-
$1,332 SGD
$1,042 USD
View
A
Retailer 11
-
$1,483 SGD
$1,160 USD
View
B+
Retailer 12
-
$1,952 SGD
$1,527 USD
View
B+
Retailer 13
-
$1,994 SGD
$1,560 USD
View
B+
Retailer 14
-
$2,166 SGD
$1,694 USD
View
B+
Retailer 15
-
$2,215 SGD
$1,733 USD
View
B+
Retailer 16
-
$2,233 SGD
$1,747 USD
View
B+
Retailer 17
-
$2,325 SGD
£1,432 GBP
View
Retailer 18
-
$2,998 SGD
$2,345 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
20258573A · Oct 30
$3,119 SGD
$2,440 USD
View
18 more retailers have this diamond
Prices start from $533 SGDSave up to $2,586 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
1.51ct Cushion
$533 SGD