CaratHunter
Plans
Cushion|Lab Grown|IGI

1.55ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG674547147

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG674547147

Diamond specifications and retailer prices

From $288 SGD
$225 USD
As of November 1, 2026
Save $1,245 SGD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,533 SGD at Reve Diamonds · As of November 1, 2026
View at Reve 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG674547147 or 674547147. Listed at 15 retailers as of November 1, 2026, with prices from $288 to $1,533, a $1,245 spread on the same certified stone. Reve Diamonds lists it at $1,533. 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

1.55
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle42°
OriginLab Grown
Grading LabIGI
CertificateIGI LG674547147
Dimensions6.81 × 6.48 × 4.48 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.81 mm6.48 mm1.55 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG674547147
Side View
Table 62.0%Crown 36.1°Girdle: MED-STKPavilion 42°Culet: NoneDepth 69.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $835 SGD|Low: $288 SGD|High: $1,512 SGD|Avg: $777 SGD|+12.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7$288 SGD
Retailer 9$360 SGD
Retailer 3$409 SGD
Retailer 2$454 SGD
Retailer 5$522 SGD
Retailer 4$587 SGD
Retailer 1$835 SGD
Retailer 10$1,228 SGD
Retailer 6$1,241 SGD
Retailer 8$1,502 SGD

39 data points across 10 retailers

15 retailers$288 SGD to $1,533 SGD

A
Cheapest Retailer
-
$288 SGD
$225 USD
Final sale: no returns
A
Retailer 2
-
$360 SGD
HK$2,200 HKD
View
A
Retailer 3
-
$409 SGD
£252 GBP
View
B+
Retailer 4
-
$454 SGD
$355 USD
View
A
Retailer 5
-
$522 SGD
€389 EUR
View
A
Retailer 6
-
$587 SGD
£361 GBP
View
A
Retailer 7
-
$634 SGD
$496 USD
View
B+
Retailer 8
-
$835 SGD
$653 USD
View
B+
Retailer 9
-
$1,041 SGD
View
B+
Retailer 10
-
$1,096 SGD
$857 USD
View
B+
Retailer 11
-
$1,228 SGD
$960 USD
View
B+
Retailer 12
-
$1,241 SGD
$970 USD
View
Retailer 13
-
$1,381 SGD
$1,080 USD
View
Price last confirmed 7 days ago
B
Retailer 14
-
$1,502 SGD
£925 GBP
View
Most Expensive
B
Reve Diamonds
EF5D41078 · Nov 1
$1,533 SGD
$1,199 USD
View
14 more retailers have this diamond
Prices start from $288 SGDSave up to $1,245 SGD

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
$288 SGD