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Cushion|Lab Grown|IGI

1.71ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG529242861

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG529242861

Diamond specifications and retailer prices

From $440 NZD
$248 USD
As of October 30, 2026
Save $1,689 NZD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,129 NZD at Brilliant Earth · As of October 31, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG529242861 or 529242861. Listed at 11 retailers as of October 30, 2026, with prices from $440 to $2,129, a $1,689 spread on the same certified stone. Brilliant Earth lists it at $2,129. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529242861
Dimensions7.10 × 6.81 × 4.57 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Blue 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
7.10 mm6.81 mm1.71 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529242861
Side View
Table 63.5%Crown 34.9°Girdle: MED-THKPavilion 40°Culet: NoneDepth 67.1%

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: $2,129 NZD|Low: $426 NZD|High: $2,129 NZD|Avg: $1,113 NZD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 10$440 NZD
Retailer 7$488 NZD
Retailer 8$656 NZD
Retailer 5$885 NZD
Retailer 4$908 NZD
Retailer 9$951 NZD
Retailer 11$1,059 NZD
Retailer 6$1,277 NZD
Retailer 3$1,662 NZD
Retailer 2$1,956 NZD
Brilliant Earth$2,129 NZD

42 data points across 11 retailers

11 retailers$440 NZD to $2,129 NZD

A
Cheapest Retailer
-
$440 NZD
$248 USD
Final sale: no returns
Retailer 2
-
$488 NZD
$275 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$656 NZD
$370 USD
View
A
Retailer 4
-
$885 NZD
€475 EUR
View
A
Retailer 5
-
$908 NZD
£403 GBP
View
A
Retailer 6
-
$951 NZD
$536 USD
View
A
Retailer 7
-
$1,059 NZD
$597 USD
View
B+
Retailer 8
-
$1,277 NZD
$720 USD
View
B
Retailer 9
-
$1,662 NZD
$937 USD
View
B+
Retailer 10
-
$1,956 NZD
£868 GBP
View
Most Expensive
B
Brilliant Earth
11260489A · Oct 31
$2,129 NZD
$1,200 USD
View
10 more retailers have this diamond
Prices start from $440 NZDSave up to $1,689 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
$440 NZD