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Cushion|Lab Grown|IGI

3.09ct J VS1 Cushion Lab Grown Diamond

ID • J/VS1 • IGI LG837637492

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG837637492

Diamond specifications and retailer prices

From £1,649 GBP
As of November 4, 2026
12 retailers carry this diamond
Most expensive: £4,352 GBP at Taylor and Hart · As of October 27, 2026
View at Taylor and Hart

About this 3.09ct lab-grown cushion diamond

This 3.09ct lab-grown cushion sits in the three to five carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG837637492 or 837637492. Listed at 12 retailers as of November 4, 2026. 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

3.09
Carat
J
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.8°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837637492
Dimensions11.70 × 7.79 × 4.93 mm
L/W Ratio1.50
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.70 mm7.79 mm3.09 ctJ / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837637492
Side View
Table 54.0%Crown 31.8°Girdle: STK-THKPavilion 35.3°Culet: LargeDepth 63.3%

Caratlytics Score

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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 4
Current: £1,649 GBP|Low: £967 GBP|High: £4,352 GBP|Avg: £2,131 GBP|+1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Taylor and Hart
October 31, 2026
Retailer 9£1,106 GBP
Retailer 8£1,144 GBP
Retailer 3£1,195 GBP
Retailer 10£1,236 GBP
Retailer 6£1,363 GBP
Retailer 5£1,479 GBP
Retailer 1£1,649 GBP
Retailer 11£2,152 GBP
Retailer 7£2,861 GBP
Retailer 2£3,467 GBP
Retailer 4£3,537 GBP
Taylor and Hart£4,352 GBP

26 data points across 12 retailers

12 retailers

Retailer 1
-
£1,106 GBP
Price last confirmed 16 days ago
Retailer 2
-
£1,144 GBP
View
Price last confirmed 9 days ago
Retailer 3
-
£1,195 GBP
View
Price last confirmed 10 days ago
Retailer 4
-
£1,236 GBP
View
Price last confirmed 25 days ago
Retailer 5
-
£1,363 GBP
View
Price last confirmed 9 days ago
Retailer 6
-
£1,479 GBP
View
Price last confirmed 11 days ago
B+
Retailer 7
-
£1,649 GBP
View
Retailer 8
-
£2,152 GBP
View
Price last confirmed 34 days ago
Retailer 9
-
£2,861 GBP
View
Price last confirmed 12 days ago
Retailer 10
-
£3,467 GBP
View
Price last confirmed 10 days ago
Retailer 11
-
£3,537 GBP
View
Price last confirmed 10 days ago
Most Expensive
Taylor and Hart
GYQM9ZJ · Oct 27
£4,352 GBP
$5,825 USD
View
Price last confirmed 10 days ago
11 more retailers have this diamond
Prices start from £1,649 GBP

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+
3.09ct Cushion
£1,649 GBP