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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 $208 USD
As of October 28, 2026
Save $1,572 USD (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,780 USD 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 28, 2026, with prices from $208 to $1,780, a $1,572 spread on the same certified stone. Do Amore Diamonds lists it at $1,780. 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
Color
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

How it works →
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 28
Current: $467 USD|Low: $208 USD|High: $1,930 USD|Avg: $666 USD|+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$208 USD
Retailer 7$230 USD
Retailer 2$310 USD
Retailer 3$416 USD
Retailer 1$467 USD
Retailer 10$569 USD
Retailer 5$865 USD
Retailer 8$942 USD
Retailer 4$1,189 USD
Retailer 6$1,220 USD

42 data points across 10 retailers

14 retailers$208 USD to $1,780 USD

A
Cheapest Retailer
-
$208 USD
Final sale: no returns
A
Retailer 2
-
$230 USD
View
B+
Retailer 3
-
$310 USD
View
A
Retailer 4
-
$416 USD
€396 EUR
View
A
Retailer 5
-
$422 USD
View
A
Retailer 6
-
$467 USD
£368 GBP
View
A
Retailer 7
-
$569 USD
View
B+
Retailer 8
-
$856 USD
View
Retailer 9
-
$865 USD
View
Price last confirmed 8 days ago
Retailer 10
-
$915 USD
View
Price last confirmed 109 days ago
B+
Retailer 11
-
$942 USD
View
B
Retailer 12
-
$1,189 USD
£936 GBP
View
B
Retailer 13
-
$1,220 USD
View
Most Expensive
B
Do Amore Diamonds
27-D3AE044AA · Oct 29
$1,780 USD
View
13 more retailers have this diamond
Prices start from $208 USDSave up to $1,572 USD

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
$208 USD