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Cushion|Lab Grown|IGI

3.05ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG809618099

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG809618099

Diamond specifications and retailer prices

From $515 SGD
As of November 4, 2026
Save $1,965 SGD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,480 SGD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 3.05ct lab-grown cushion diamond

This 3.05ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG809618099 or 809618099. Listed at 11 retailers as of November 1, 2026, with prices from $515 to $2,480, a $1,965 spread on the same certified stone. Rare Carat lists it at $2,480. 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

3.05
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG809618099
Dimensions9.73 × 7.12 × 4.78 mm
L/W Ratio1.37
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.73 mm7.12 mm3.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG809618099
Side View
Table 58.0%Crown 31.5°Girdle: STK-THKPavilion 34.7°Culet: NoneDepth 67.1%

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: Nov 4
Current: $2,480 SGD|Low: $515 SGD|High: $2,518 SGD|Avg: $1,368 SGD|-1.5%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3$515 SGD
Retailer 6$572 SGD
Retailer 5$865 SGD
Retailer 10$916 SGD
Retailer 2$1,019 SGD
Retailer 8$1,071 SGD
Retailer 7$1,309 SGD
Retailer 9$1,888 SGD
Retailer 11$2,181 SGD
Retailer 4$2,226 SGD
Rare Carat$2,480 SGD

43 data points across 11 retailers

11 retailers$515 SGD to $2,480 SGD

A
Cheapest Retailer
-
$515 SGD
Final sale: no returns
Retailer 2
-
$572 SGD
View
Price last confirmed 13 days ago
A
Retailer 3
-
$865 SGD
View
B+
Retailer 4
-
$916 SGD
View
A
Retailer 5
-
$1,019 SGD
View
A
Retailer 6
-
$1,071 SGD
View
A
Retailer 7
-
$1,309 SGD
View
B+
Retailer 8
-
$1,888 SGD
View
B
Retailer 9
-
$2,181 SGD
View
B+
Retailer 10
-
$2,226 SGD
View
Most Expensive
B+
Rare Carat
K08-51A_l_809618099 · Nov 1
$2,480 SGD
$1,935 USD
View
10 more retailers have this diamond
Prices start from $515 SGDSave up to $1,965 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
3.05ct Cushion
$515 SGD