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Cushion|Lab Grown|IGI

1.65ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG485151098

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG485151098

Diamond specifications and retailer prices

From $369 NZD
$208 USD
As of October 30, 2026
Save $2,789 NZD (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,158 NZD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.65ct lab-grown cushion diamond

This 1.65ct 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 LG485151098 or 485151098. Listed at 14 retailers as of October 29, 2026, with prices from $369 to $3,158, a $2,789 spread on the same certified stone. Do Amore Diamonds lists it at $3,158. 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

1.65
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485151098
Dimensions7.48 × 6.52 × 4.41 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
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
7.48 mm6.52 mm1.65 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485151098
Side View
Table 62.5%Crown 35.4°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 67.6%

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 30
Current: $829 NZD|Low: $369 NZD|High: $3,424 NZD|Avg: $1,182 NZD|+4.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 9$369 NZD
Retailer 7$408 NZD
Retailer 2$550 NZD
Retailer 3$738 NZD
Retailer 1$829 NZD
Retailer 10$1,010 NZD
Retailer 5$1,535 NZD
Retailer 8$1,671 NZD
Retailer 4$2,109 NZD
Retailer 6$2,165 NZD

42 data points across 10 retailers

14 retailers$369 NZD to $3,158 NZD

A
Cheapest Retailer
-
$369 NZD
$208 USD
Final sale: no returns
A
Retailer 2
-
$408 NZD
$230 USD
View
B+
Retailer 3
-
$550 NZD
$310 USD
View
A
Retailer 4
-
$738 NZD
€396 EUR
View
A
Retailer 5
-
$749 NZD
$422 USD
View
A
Retailer 6
-
$829 NZD
£368 GBP
View
A
Retailer 7
-
$1,010 NZD
$569 USD
View
B+
Retailer 8
-
$1,519 NZD
$856 USD
View
Retailer 9
-
$1,535 NZD
$865 USD
View
Price last confirmed 9 days ago
Retailer 10
-
$1,624 NZD
$915 USD
View
Price last confirmed 109 days ago
B+
Retailer 11
-
$1,671 NZD
$942 USD
View
B
Retailer 12
-
$2,109 NZD
£936 GBP
View
B
Retailer 13
-
$2,165 NZD
$1,220 USD
View
Most Expensive
B
Do Amore Diamonds
27-D3AE044AA · Oct 29
$3,158 NZD
$1,780 USD
View
13 more retailers have this diamond
Prices start from $369 NZDSave up to $2,789 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
1.65ct Cushion
$369 NZD