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Cushion|Lab Grown|IGI

1.71ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG766660227

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG766660227

Diamond specifications and retailer prices

From $602 SGD
€447 EUR
As of October 29, 2026
Save $2,180 SGD (78%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,781 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.71ct lab-grown cushion diamond

This 1.71ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG766660227 or 766660227. Listed at 9 retailers as of October 29, 2026, with prices from $602 to $2,781, a $2,180 spread on the same certified stone. Brilliant Earth lists it at $2,781. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.71
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle32.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG766660227
Dimensions7.63 × 6.67 × 4.02 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.63 mm6.67 mm1.71 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG766660227
Side View
Table 59.0%Crown 33.7°Girdle: MED-THKPavilion 32.3°Culet: NoneDepth 60.3%

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 29
Current: $2,781 SGD|Low: $588 SGD|High: $2,858 SGD|Avg: $1,142 SGD|-2.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 3$602 SGD
Retailer 6$620 SGD
Retailer 2$687 SGD
Retailer 7$699 SGD
Retailer 8$731 SGD
Retailer 9$1,239 SGD
Retailer 5$1,391 SGD
Retailer 4$1,468 SGD
Brilliant Earth$2,781 SGD

42 data points across 9 retailers

9 retailers$602 SGD to $2,781 SGD

A
Cheapest Retailer
-
$602 SGD
€447 EUR
B+
Retailer 2
-
$620 SGD
$484 USD
View
A
Retailer 3
-
$687 SGD
£422 GBP
View
A
Retailer 4
-
$699 SGD
$545 USD
View
A
Retailer 5
-
$731 SGD
$570 USD
View
B+
Retailer 6
-
$1,239 SGD
$967 USD
View
Retailer 7
-
$1,391 SGD
$1,085 USD
View
Price last confirmed 11 days ago
B
Retailer 8
-
$1,468 SGD
£902 GBP
View
Most Expensive
B
Brilliant Earth
17710949A · Oct 29
$2,781 SGD
$2,170 USD
View
8 more retailers have this diamond
Prices start from $602 SGDSave up to $2,180 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
1.71ct Cushion
$602 SGD