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Cushion|Lab Grown|IGI

3.18ct I VS1 Cushion Lab Grown Diamond

ID • I/VS1 • IGI LG831678522

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG831678522

Diamond specifications and retailer prices

From $1,937 SGD
$1,512 USD
As of November 3, 2026
Save $5,102 SGD (72%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,039 SGD at Taylor and Hart · As of November 3, 2026
View at Taylor and Hart

About this 3.18ct lab-grown cushion diamond

This 3.18ct lab-grown cushion sits in the three to five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG831678522 or 831678522. Listed at 11 retailers as of November 3, 2026, with prices from $1,937 to $7,039, a $5,102 spread on the same certified stone. Taylor and Hart lists it at $7,039. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.18
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831678522
Dimensions10.91 × 7.38 × 4.85 mm
L/W Ratio1.48
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.91 mm7.38 mm3.18 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831678522
Side View
Table 49.0%Crown 37.5°Girdle: STK-VTKPavilion 35.1°Culet: LargeDepth 65.7%

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 3
Current: $4,656 SGD|Low: $1,886 SGD|High: $7,681 SGD|Avg: $3,627 SGD|-8.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Taylor and Hart
November 3, 2026
Retailer 6$1,937 SGD
Retailer 2$2,116 SGD
Retailer 9$2,182 SGD
Retailer 7$2,223 SGD
Retailer 5$2,395 SGD
Retailer 3$2,907 SGD
Retailer 4$3,166 SGD
Retailer 1$4,656 SGD
Retailer 8$4,830 SGD
Retailer 10$6,110 SGD
Taylor and Hart$7,039 SGD

31 data points across 11 retailers

11 retailers$1,937 SGD to $7,039 SGD

A
Cheapest Retailer
-
$1,937 SGD
$1,512 USD
B+
Retailer 2
-
$2,116 SGD
HK$12,900 HKD
View
Retailer 3
-
$2,182 SGD
$1,703 USD
View
Price last confirmed 22 days ago
B+
Retailer 4
-
$2,223 SGD
$1,735 USD
View
B+
Retailer 5
-
$2,395 SGD
$1,869 USD
View
B
Retailer 6
-
$2,907 SGD
€2,161 EUR
View
B+
Retailer 7
-
$3,166 SGD
$2,471 USD
View
B
Retailer 8
-
$4,656 SGD
ZAR 58,706 ZAR
View
B
Retailer 9
-
$4,830 SGD
$3,770 USD
View
B
Retailer 10
-
$6,110 SGD
View
Most Expensive
B
Taylor and Hart
ELF52IJ · Nov 3
$7,039 SGD
$5,494 USD
View
10 more retailers have this diamond
Prices start from $1,937 SGDSave up to $5,102 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
3.18ct Cushion
$1,937 SGD