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Cushion|Lab Grown|IGI

1.13ct F SI1 Cushion Lab Grown Diamond

GD • F/SI1 • IGI LG645409540

Shape and cutting style on the report: Cushion mixed cut

Certificate IGI LG645409540

Diamond specifications and retailer prices

From HK$2,704 HKD
As of November 6, 2026
Save HK$698 HKD (21%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$4,004 HKD at Rare Carat · As of August 9, 2026
View at Rare Carat

About this 1.13ct lab-grown cushion diamond

This 1.13ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG645409540 or 645409540. Listed at 3 retailers as of November 6, 2026, with a 26% 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

1.13
Carat
F
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle44.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645409540
Dimensions7.65 × 5.18 × 3.24 mm
L/W Ratio1.48
Culet sizeLong
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.65 mm5.18 mm1.13 ctF / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645409540
Side View
Table 61.0%Crown 36.1°Girdle: STK-THKPavilion 44.9°Culet: LNGDepth 62.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$4,004 HKD|Low: HK$2,234 HKD|High: HK$4,828 HKD|Avg: HK$3,181 HKD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 6HK$2,234 HKD
Retailer 3HK$2,273 HKD
Retailer 8HK$2,343 HKD
Retailer 5HK$2,704 HKD
Retailer 4HK$2,743 HKD
Retailer 2HK$3,401 HKD
Retailer 7HK$3,456 HKD
Retailer 10HK$3,825 HKD
Rare CaratHK$4,004 HKD
Retailer 9HK$4,828 HKD

5 data points across 10 retailers

3 retailersHK$2,704 HKD to HK$3,401 HKD

B+
Cheapest Retailer
-
HK$2,704 HKD
Final sale: no returns
B+
Retailer 2
-
HK$3,401 HKD
View
Most Expensive
Rare Carat
67779A_l_645409540 · Aug 9
HK$4,004 HKD
$511 USD
View
Price last confirmed 89 days ago
2 more retailers have this diamond
Prices start from HK$2,704 HKDSave up to HK$698 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.

B+
1.13ct Cushion
HK$2,704 HKD