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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 HK$1,765 HKD
$225 USD
As of November 1, 2026
Save HK$7,639 HKD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$9,404 HKD 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 HK$1,765 to HK$9,404, a HK$7,639 spread on the same certified stone. Reve Diamonds lists it at HK$9,404. 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: HK$5,124 HKD|Low: HK$1,765 HKD|High: HK$9,277 HKD|Avg: HK$4,768 HKD|+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 7HK$1,765 HKD
Retailer 9HK$2,209 HKD
Retailer 3HK$2,510 HKD
Retailer 2HK$2,785 HKD
Retailer 5HK$3,205 HKD
Retailer 4HK$3,599 HKD
Retailer 1HK$5,124 HKD
Retailer 10HK$7,532 HKD
Retailer 6HK$7,611 HKD
Retailer 8HK$9,217 HKD

39 data points across 10 retailers

15 retailersHK$1,765 HKD to HK$9,404 HKD

A
Cheapest Retailer
-
HK$1,765 HKD
$225 USD
Final sale: no returns
A
Retailer 2
-
HK$2,209 HKD
View
A
Retailer 3
-
HK$2,510 HKD
£252 GBP
View
B+
Retailer 4
-
HK$2,785 HKD
$355 USD
View
A
Retailer 5
-
HK$3,205 HKD
€389 EUR
View
A
Retailer 6
-
HK$3,599 HKD
£361 GBP
View
A
Retailer 7
-
HK$3,892 HKD
$496 USD
View
Retailer 8
-
HK$5,124 HKD
$653 USD
View
B+
Retailer 9
-
HK$6,387 HKD
SGD 1,100 SGD
View
B+
Retailer 10
-
HK$6,723 HKD
$857 USD
View
B+
Retailer 11
-
HK$7,532 HKD
$960 USD
View
B+
Retailer 12
-
HK$7,611 HKD
$970 USD
View
B
Retailer 13
-
HK$8,474 HKD
$1,080 USD
View
B
Retailer 14
-
HK$9,217 HKD
£925 GBP
View
Most Expensive
B
Reve Diamonds
EF5D41078 · Nov 1
HK$9,404 HKD
$1,199 USD
View
14 more retailers have this diamond
Prices start from HK$1,765 HKDSave up to HK$7,639 HKD

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
HK$1,765 HKD