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Marquise|Lab Grown|IGI

1.22ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG828660518

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG828660518

Diamond specifications and retailer prices

From £176 GBP
As of November 4, 2026
Save £1,513 GBP (90%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,689 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 1.22ct lab-grown marquise diamond

This 1.22ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG828660518 or 828660518. Listed at 14 retailers as of November 4, 2026, with prices from £176 to £1,689, a £1,513 spread on the same certified stone. Do Amore Diamonds lists it at £1,689. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.22
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828660518
Dimensions11.47 × 5.54 × 3.36 mm
L/W Ratio2.07
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.47 mm5.54 mm1.22 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828660518
Side View
Table 59.0%Crown 32.6°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
A+
Exceptional
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 4
Current: £1,689 GBP|Low: £173 GBP|High: £1,726 GBP|Avg: £804 GBP|-2.1%
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
November 5, 2026
Retailer 9£176 GBP
Retailer 14£204 GBP
Retailer 11£368 GBP
Retailer 13£405 GBP
Retailer 4£460 GBP
Retailer 7£592 GBP
Retailer 10£705 GBP
Retailer 12£776 GBP
Retailer 6£921 GBP
Retailer 2£964 GBP
Retailer 3£1,089 GBP
Retailer 5£1,271 GBP
Retailer 8£1,326 GBP
Do Amore Diamonds£1,689 GBP

24 data points across 14 retailers

14 retailers£176 GBP to £1,689 GBP

A+
Cheapest Retailer
-
£176 GBP
A
Retailer 2
-
£204 GBP
View
A
Retailer 3
-
£368 GBP
View
Retailer 4
-
£405 GBP
View
Price last confirmed 9 days ago
A
Retailer 5
-
£460 GBP
View
B+
Retailer 6
-
£592 GBP
View
B+
Retailer 7
-
£705 GBP
View
B+
Retailer 8
-
£776 GBP
View
B+
Retailer 9
-
£964 GBP
View
Retailer 10
-
£1,089 GBP
View
Price last confirmed 8 days ago
Retailer 11
-
£1,090 GBP
View
Price last confirmed 50 days ago
Retailer 12
-
£1,271 GBP
View
Price last confirmed 28 days ago
B
Retailer 13
-
£1,326 GBP
View
Most Expensive
B
Do Amore Diamonds
27-A7077F1D0 · Nov 4
£1,689 GBP
$2,280 USD
View
13 more retailers have this diamond
Prices start from £176 GBPSave up to £1,513 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+
1.22ct Marquise
£176 GBP