Cushion|Lab Grown|IGI

1.55ct E VS1 Cushion Lab Grown Diamond

GD • E/VS1 • IGI LG690504928

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

Certificate IGI LG690504928

Diamond specifications and retailer prices

From $266 USD
As of October 28, 2026
Save $938 USD (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,060 USD at Brilliant Earth · As of October 16, 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 E colour (colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG690504928 or 690504928. Listed at 16 retailers as of October 28, 2026, with a 353% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.55
Carat
E
Color
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG690504928
Dimensions6.88 × 6.76 × 4.50 mm
L/W Ratio1.02
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
6.88 mm6.76 mm1.55 ctE / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG690504928
Side View
Table 65.0%Crown 36.1°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 66.6%

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: $2,060 USD|Low: $266 USD|High: $2,060 USD|Avg: $690 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
Retailer 13
October 29, 2026
Retailer 3$266 USD
Retailer 10$296 USD
Retailer 11$348 USD
Retailer 9$498 USD
Retailer 4$499 USD
Retailer 7$508 USD
Retailer 5$549 USD
Retailer 6$557 USD
Retailer 8$690 USD
Retailer 12$767 USD
Retailer 2$1,193 USD
Retailer 13$1,204 USD
Brilliant Earth$2,060 USD

42 data points across 13 retailers

16 retailers$266 USD to $1,204 USD

A
Cheapest Retailer
-
$266 USD
Final sale: no returns
A
Retailer 2
-
$296 USD
View
A
Retailer 3
-
$348 USD
£274 GBP
View
Price last confirmed 12 days ago
A
Retailer 4
-
$498 USD
€474 EUR
View
B+
Retailer 5
-
$499 USD
View
A
Retailer 6
-
$508 USD
ZAR 8,212 ZAR
View
B+
Retailer 7
-
$540 USD
View
B+
Retailer 8
-
$549 USD
View
B+
Retailer 9
-
$557 USD
£438 GBP
View
B+
Retailer 10
-
$690 USD
A$1,061 AUD
View
B
Retailer 11
-
$767 USD
View
B
Retailer 12
-
$907 USD
View
B
Retailer 13
-
$1,003 USD
View
B
Retailer 14
-
$1,193 USD
£939 GBP
View
B
Retailer 15
-
$1,204 USD
View
Most Expensive
C
Brilliant Earth
14979486A · Oct 16
$2,060 USD
View
Price last confirmed 12 days ago
15 more retailers have this diamond
Prices start from $266 USDSave up to $938 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
$266 USD