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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 $827 NZD
€444 EUR
As of October 31, 2026
Save $2,491 NZD (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,318 NZD at Brilliant Earth · As of October 30, 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 30, 2026, with prices from $827 to $3,318, a $2,491 spread on the same certified stone. Brilliant Earth lists it at $3,318. 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 31
Current: $3,318 NZD|Low: $814 NZD|High: $3,957 NZD|Avg: $1,560 NZD|-16.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 2$827 NZD
Retailer 6$859 NZD
Retailer 3$944 NZD
Retailer 7$967 NZD
Retailer 8$1,011 NZD
Retailer 5$1,925 NZD
Retailer 4$2,033 NZD
Brilliant Earth$3,318 NZD

42 data points across 8 retailers

9 retailers$827 NZD to $3,318 NZD

A
Cheapest Retailer
-
$827 NZD
€444 EUR
B+
Retailer 2
-
$859 NZD
$484 USD
View
A
Retailer 3
-
$944 NZD
£419 GBP
View
A
Retailer 4
-
$967 NZD
$545 USD
View
A
Retailer 5
-
$1,011 NZD
$570 USD
View
B+
Retailer 6
-
$1,715 NZD
$967 USD
View
Retailer 7
-
$1,925 NZD
$1,085 USD
View
Price last confirmed 12 days ago
B
Retailer 8
-
$2,033 NZD
£902 GBP
View
Most Expensive
B
Brilliant Earth
17710949A · Oct 30
$3,318 NZD
$1,870 USD
View
8 more retailers have this diamond
Prices start from $827 NZDSave up to $2,491 NZD

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
$827 NZD