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Cushion|Lab Grown|IGI

1.55ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG800677588

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG800677588

Diamond specifications and retailer prices

From $760 USD
As of October 31, 2026
Save $3,790 USD (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,550 USD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 1.55ct lab-grown cushion diamond

This 1.55ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800677588 or 800677588. Listed at 10 retailers as of October 31, 2026, with prices from $760 to $4,550, a $3,790 spread on the same certified stone. Do Amore Diamonds lists it at $4,550. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800677588
Dimensions6.91 × 6.71 × 4.43 mm
L/W Ratio1.03
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
6.91 mm6.71 mm1.55 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800677588
Side View
Table 62.0%Crown 34.8°Girdle: STK-THKPavilion 38°Culet: NoneDepth 66.0%

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 31
Current: $4,550 USD|Low: $760 USD|High: $6,020 USD|Avg: $2,307 USD|-24.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 9$760 USD
Retailer 7$768 USD
Retailer 11$796 USD
Retailer 10$899 USD
Retailer 6$986 USD
Retailer 4$1,125 USD
Retailer 8$2,715 USD
Retailer 2$3,045 USD
Retailer 3$3,517 USD
Retailer 5$3,520 USD
Do Amore Diamonds$4,550 USD

27 data points across 11 retailers

10 retailers$760 USD to $4,550 USD

A
Cheapest Retailer
-
$760 USD
A
Retailer 2
-
$768 USD
View
A
Retailer 3
-
$796 USD
View
Final sale: no returns
A
Retailer 4
-
$899 USD
View
A
Retailer 5
-
$986 USD
View
A
Retailer 6
-
$1,125 USD
€1,071 EUR
View
Retailer 7
-
$2,715 USD
View
Price last confirmed 11 days ago
B+
Retailer 8
-
$3,045 USD
£2,398 GBP
View
B
Retailer 9
-
$3,520 USD
View
Most Expensive
B
Do Amore Diamonds
27-2D5802C62 · Nov 1
$4,550 USD
View
9 more retailers have this diamond
Prices start from $760 USDSave up to $3,790 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
1.55ct Cushion
$760 USD