Cushion|Lab Grown|IGI

1.55ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG849662170

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

Certificate IGI LG849662170

Diamond specifications and retailer prices

From $556 USD
As of November 1, 2026
Save $2,954 USD (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,510 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG849662170 or 849662170. Listed at 12 retailers as of October 31, 2026, with prices from $556 to $3,510, a $2,954 spread on the same certified stone. Brilliant Earth lists it at $3,510. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG849662170
Dimensions6.78 × 6.75 × 4.36 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.78 mm6.75 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG849662170
Side View
Table 62.0%Crown 36.9°Girdle: THN-STKPavilion 37.7°Culet: NoneDepth 64.6%

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: Nov 1
Current: $3,510 USD|Low: $556 USD|High: $3,510 USD|Avg: $1,407 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 11$556 USD
Retailer 6$651 USD
Retailer 4$678 USD
Retailer 8$755 USD
Retailer 10$825 USD
Retailer 7$921 USD
Retailer 2$1,016 USD
Retailer 12$1,433 USD
Retailer 3$1,948 USD
Retailer 9$2,145 USD
Retailer 5$2,569 USD
Brilliant Earth$3,510 USD

6 data points across 12 retailers

12 retailers$556 USD to $3,510 USD

A
Cheapest Retailer
-
$556 USD
Final sale: no returns
A
Retailer 2
-
$651 USD
£513 GBP
View
A
Retailer 3
-
$678 USD
HK$5,300 HKD
View
A
Retailer 4
-
$755 USD
View
A
Retailer 5
-
$825 USD
View
A
Retailer 6
-
$921 USD
€877 EUR
View
A
Retailer 7
-
$1,016 USD
£800 GBP
View
B+
Retailer 8
-
$1,433 USD
A$2,205 AUD
View
B+
Retailer 9
-
$1,948 USD
SGD 2,633 SGD
View
B+
Retailer 10
-
$2,145 USD
View
B
Retailer 11
-
$2,569 USD
£2,023 GBP
View
Most Expensive
B
Brilliant Earth
22341190A · Oct 31
$3,510 USD
View
11 more retailers have this diamond
Prices start from $556 USDSave up to $2,954 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
$556 USD