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Cushion|Lab Grown|IGI

2.61ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG508154658

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG508154658

Diamond specifications and retailer prices

From £319 GBP
$427 USD
As of October 31, 2026
Save £2,211 GBP (87%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,530 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 2.61ct lab-grown cushion diamond

This 2.61ct lab-grown cushion sits in the two to three carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG508154658 or 508154658. Listed at 14 retailers as of October 31, 2026, with prices from £319 to £2,530, a £2,211 spread on the same certified stone. Do Amore Diamonds lists it at £2,530. 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

2.61
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508154658
Dimensions8.17 × 7.82 × 5.35 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.17 mm7.82 mm2.61 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508154658
Side View
Table 62.0%Crown 33.6°Girdle: STK-THKPavilion 40.8°Culet: NoneDepth 68.4%

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: Oct 31
Current: £2,530 GBP|Low: £308 GBP|High: £2,530 GBP|Avg: £937 GBP|+3.4%
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
November 1, 2026
Retailer 9£319 GBP
Retailer 4£342 GBP
Retailer 5£466 GBP
Retailer 7£470 GBP
Retailer 12£478 GBP
Retailer 8£516 GBP
Retailer 2£644 GBP
Retailer 3£1,009 GBP
Retailer 11£1,369 GBP
Retailer 6£1,443 GBP
Retailer 10£1,654 GBP
Do Amore Diamonds£2,530 GBP

36 data points across 12 retailers

14 retailers£319 GBP to £2,530 GBP

A
Cheapest Retailer
-
£319 GBP
$427 USD
Final sale: no returns
A
Retailer 2
-
£466 GBP
$625 USD
View
B+
Retailer 3
-
£470 GBP
$630 USD
View
Retailer 4
-
£478 GBP
View
Price last confirmed 13 days ago
A
Retailer 5
-
£516 GBP
$691 USD
View
A
Retailer 6
-
£644 GBP
View
B
Retailer 7
-
£1,009 GBP
$1,352 USD
View
B+
Retailer 8
-
£1,037 GBP
$1,389 USD
View
B+
Retailer 9
-
£1,040 GBP
CA$1,935 CAD
View
B
Retailer 10
-
£1,369 GBP
$1,834 USD
View
B
Retailer 11
-
£1,443 GBP
View
Retailer 12
-
£1,590 GBP
$2,130 USD
View
Price last confirmed 30 days ago
B
Retailer 13
-
£1,654 GBP
SGD 2,994 SGD
View
Most Expensive
B
Do Amore Diamonds
27-7DAC612AD · Oct 31
£2,530 GBP
$3,390 USD
View
13 more retailers have this diamond
Prices start from £319 GBPSave up to £2,211 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
2.61ct Cushion
£319 GBP