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Cushion|Lab Grown|IGI

1.21ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG828658173

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG828658173

Diamond specifications and retailer prices

From £244 GBP
$328 USD
As of November 1, 2026
Save £1,157 GBP (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,401 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG828658173 or 828658173. Listed at 10 retailers as of November 1, 2026, with prices from £244 to £1,401, a £1,157 spread on the same certified stone. Do Amore Diamonds lists it at £1,401. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828658173
Dimensions7.67 × 5.44 × 3.47 mm
L/W Ratio1.41
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.67 mm5.44 mm1.21 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828658173
Side View
Table 66.0%Crown 38.8°Girdle: MED-STKPavilion 35.8°Culet: NoneDepth 63.8%

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 1
Current: £1,401 GBP|Low: £205 GBP|High: £1,401 GBP|Avg: £493 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
Retailer 14
October 31, 2026
Retailer 11£244 GBP
Retailer 4£248 GBP
Retailer 14£255 GBP
Retailer 7£268 GBP
Retailer 10£276 GBP
Retailer 2£323 GBP
Retailer 13£409 GBP
Retailer 6£525 GBP
Retailer 3£526 GBP
Retailer 5£535 GBP
Retailer 8£575 GBP
Retailer 12£656 GBP
Retailer 9£802 GBP
Do Amore Diamonds£1,401 GBP

9 data points across 14 retailers

10 retailers£244 GBP to £1,401 GBP

B+
Cheapest Retailer
-
£244 GBP
$328 USD
A
Retailer 2
-
£268 GBP
View
Retailer 3
-
£276 GBP
$370 USD
View
Price last confirmed 12 days ago
A
Retailer 4
-
£323 GBP
€413 EUR
View
B+
Retailer 5
-
£409 GBP
$548 USD
View
Retailer 6
-
£535 GBP
$718 USD
View
Price last confirmed 54 days ago
B+
Retailer 7
-
£575 GBP
A$1,188 AUD
View
B
Retailer 8
-
£656 GBP
$880 USD
View
B
Retailer 9
-
£802 GBP
View
Most Expensive
B
Do Amore Diamonds
27-86CAAC5FE · Nov 2
£1,401 GBP
$1,880 USD
View
9 more retailers have this diamond
Prices start from £244 GBPSave up to £1,157 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
1.21ct Cushion
£244 GBP