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Cushion|Lab Grown|IGI

3.09ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG817671723

Shape and cutting style on the report: Cushion mixed cut

Certificate IGI LG817671723

Diamond specifications and retailer prices

From £679 GBP
$911 USD
As of November 3, 2026
Save £4,525 GBP (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £5,205 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 3.09ct lab-grown cushion diamond

This 3.09ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG817671723 or 817671723. Listed at 13 retailers as of November 2, 2026, with prices from £679 to £5,205, a £4,525 spread on the same certified stone. Do Amore Diamonds lists it at £5,205. 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
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle51.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817671723
Dimensions11.08 × 6.58 × 4.34 mm
L/W Ratio1.68
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.08 mm6.58 mm3.09 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817671723
Side View
Table 58.0%Crown 37.4°Girdle: MED-THKPavilion 51.4°Culet: LargeDepth 66.0%

Caratlytics Score

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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 3
Current: £5,205 GBP|Low: £679 GBP|High: £5,205 GBP|Avg: £1,820 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 3, 2026
Retailer 4£679 GBP
Retailer 12£680 GBP
Retailer 13£813 GBP
Retailer 11£958 GBP
Retailer 10£959 GBP
Retailer 2£1,154 GBP
Retailer 8£1,551 GBP
Retailer 6£1,694 GBP
Retailer 7£2,068 GBP
Retailer 3£2,297 GBP
Retailer 5£2,677 GBP
Retailer 9£2,828 GBP
Do Amore Diamonds£5,205 GBP

35 data points across 13 retailers

13 retailers£679 GBP to £5,205 GBP

A
Cheapest Retailer
-
£679 GBP
$911 USD
Retailer 2
-
£680 GBP
$912 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
£813 GBP
$1,090 USD
View
A
Retailer 4
-
£958 GBP
$1,285 USD
View
A
Retailer 5
-
£959 GBP
$1,286 USD
View
A
Retailer 6
-
£1,154 GBP
View
B+
Retailer 7
-
£1,551 GBP
$2,080 USD
View
B+
Retailer 8
-
£1,694 GBP
A$3,496 AUD
View
B
Retailer 9
-
£2,068 GBP
View
B
Retailer 10
-
£2,297 GBP
$3,081 USD
View
B
Retailer 11
-
£2,677 GBP
$3,590 USD
View
Retailer 12
-
£2,828 GBP
View
Price last confirmed 13 days ago
Most Expensive
B
Do Amore Diamonds
27-7F4268558 · Nov 2
£5,205 GBP
$6,980 USD
View
12 more retailers have this diamond
Prices start from £679 GBPSave up to £4,525 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.

A
3.09ct Cushion
£679 GBP