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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 $442 SGD
As of November 6, 2026
Save $114 SGD (21%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $655 SGD 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: $655 SGD|Low: $365 SGD|High: $789 SGD|Avg: $520 SGD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 6$365 SGD
Retailer 3$372 SGD
Retailer 8$383 SGD
Retailer 5$442 SGD
Retailer 4$449 SGD
Retailer 2$556 SGD
Retailer 7$565 SGD
Retailer 10$625 SGD
Rare Carat$655 SGD
Retailer 9$789 SGD

5 data points across 10 retailers

3 retailers$442 SGD to $556 SGD

B+
Cheapest Retailer
-
$442 SGD
Final sale: no returns
B+
Retailer 2
-
$556 SGD
View
Most Expensive
Rare Carat
67779A_l_645409540 · Aug 9
$655 SGD
$511 USD
View
Price last confirmed 89 days ago
2 more retailers have this diamond
Prices start from $442 SGDSave up to $114 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.

B+
1.13ct Cushion
$442 SGD