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Cushion|Lab Grown|IGI

1.88ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG668428911

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG668428911

Diamond specifications and retailer prices

From $638 USD
As of October 28, 2026
Save $4,432 USD (87%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,070 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.88ct lab-grown cushion diamond

This 1.88ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG668428911 or 668428911. Listed at 10 retailers as of October 28, 2026, with prices from $638 to $5,070, a $4,432 spread on the same certified stone. Do Amore Diamonds lists it at $5,070. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.88
Carat
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668428911
Dimensions7.19 × 7.18 × 4.86 mm
L/W Ratio1.00
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
7.19 mm7.18 mm1.88 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG668428911
Side View
Table 60.0%Crown 35.8°Girdle: THN-MEDPavilion 40.4°Culet: NoneDepth 67.7%

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: $4,800 USD|Low: $638 USD|High: $4,800 USD|Avg: $1,956 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 8$638 USD
Retailer 7$936 USD
Retailer 6$1,088 USD
Retailer 4$1,090 USD
Retailer 9$1,308 USD
Retailer 5$1,817 USD
Retailer 3$2,780 USD
Retailer 2$3,092 USD
Do Amore Diamonds$4,800 USD

17 data points across 9 retailers

10 retailers$638 USD to $5,070 USD

A
Cheapest Retailer
-
$638 USD
Final sale: no returns
A
Retailer 2
-
$936 USD
View
A
Retailer 3
-
$1,088 USD
View
A
Retailer 4
-
$1,090 USD
View
A
Retailer 5
-
$1,308 USD
View
A
Retailer 6
-
$1,817 USD
A$2,795 AUD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$2,780 USD
View
B+
Retailer 8
-
$3,092 USD
£2,435 GBP
View
B
Retailer 9
-
$4,800 USD
View
Most Expensive
B
Do Amore Diamonds
27-903074808 · Oct 29
$5,070 USD
View
9 more retailers have this diamond
Prices start from $638 USDSave up to $4,432 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
1.88ct Cushion
$638 USD