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Cushion|Lab Grown|IGI

1.51ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG821606794

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821606794

Diamond specifications and retailer prices

From £182 GBP
$244 USD
As of October 30, 2026
Save £1,448 GBP (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,630 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG821606794 or 821606794. Listed at 15 retailers as of October 27, 2026, with prices from £182 to £1,630, a £1,448 spread on the same certified stone. Queensmith lists it at £1,630. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle32.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821606794
Dimensions7.69 × 6.04 × 3.75 mm
L/W Ratio1.27
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.69 mm6.04 mm1.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821606794
Side View
Table 64.0%Crown 33.3°Girdle: MED-THKPavilion 32.3°Culet: NoneDepth 62.1%

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 30
Current: £375 GBP|Low: £129 GBP|High: £935 GBP|Avg: £531 GBP|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 14£182 GBP
Retailer 11£202 GBP
Retailer 3£346 GBP
Retailer 9£347 GBP
Retailer 7£375 GBP
Retailer 1£375 GBP
Retailer 6£386 GBP
Retailer 10£472 GBP
Retailer 4£689 GBP
Retailer 8£752 GBP
Retailer 12£811 GBP
Retailer 2£822 GBP
Retailer 13£825 GBP
Retailer 5£935 GBP

43 data points across 14 retailers

15 retailers£182 GBP to £1,630 GBP

A
Cheapest Retailer
-
£182 GBP
$244 USD
Final sale: no returns
A
Retailer 2
-
£202 GBP
$271 USD
View
A
Retailer 3
-
£346 GBP
$464 USD
View
A
Retailer 4
-
£347 GBP
ZAR 7,516 ZAR
View
A
Retailer 5
-
£375 GBP
€478 EUR
View
A
Retailer 6
-
£375 GBP
View
A
Retailer 7
-
£386 GBP
$517 USD
View
A
Retailer 8
-
£472 GBP
A$973 AUD
View
B+
Retailer 9
-
£689 GBP
$923 USD
View
B+
Retailer 10
-
£752 GBP
A$1,551 AUD
View
B+
Retailer 11
-
£811 GBP
View
B
Retailer 12
-
£822 GBP
$1,102 USD
View
Retailer 13
-
£825 GBP
$1,105 USD
View
Price last confirmed 12 days ago
B
Retailer 14
-
£935 GBP
$1,252 USD
View
Most Expensive
B
Queensmith
LG821606794 · Oct 27
£1,630 GBP
View
14 more retailers have this diamond
Prices start from £182 GBPSave up to £1,448 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
1.51ct Cushion
£182 GBP