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Round|Lab Grown|IGI

1.22ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG841678727

Shape and cutting style on the report: Round brilliant

Certificate IGI LG841678727

Diamond specifications and retailer prices

From £188 GBP
$252 USD
As of October 29, 2026
Save £939 GBP (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,127 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.22ct lab-grown round diamond

This 1.22ct lab-grown round 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 LG841678727 or 841678727. Listed at 16 retailers as of October 29, 2026, with prices from £188 to £1,127, a £939 spread on the same certified stone. Brilliant Earth lists it at £1,127. 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 angle33.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841678727
Dimensions6.86 × 6.88 × 4.19 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
HEARTS & ARROWS 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
6.86 mm6.88 mm1.22 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841678727
Side View
Table 57.0%Crown 33.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.1%

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 29
Current: £1,127 GBP|Low: £188 GBP|High: £1,291 GBP|Avg: £588 GBP|-12.7%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 16£188 GBP
Retailer 14£218 GBP
Retailer 15£354 GBP
Retailer 7£355 GBP
Retailer 2£371 GBP
Retailer 3£390 GBP
Retailer 10£408 GBP
Retailer 5£554 GBP
Retailer 13£567 GBP
Retailer 4£716 GBP
Retailer 6£749 GBP
Retailer 9£832 GBP
Retailer 8£873 GBP
Retailer 11£938 GBP
Retailer 12£1,000 GBP
Brilliant Earth£1,127 GBP

10 data points across 16 retailers

16 retailers£188 GBP to £1,127 GBP

A
Cheapest Retailer
-
£188 GBP
$252 USD
A
Retailer 2
-
£218 GBP
$292 USD
View
A
Retailer 3
-
£354 GBP
$474 USD
View
A
Retailer 4
-
£355 GBP
$475 USD
View
A
Retailer 5
-
£371 GBP
View
A
Retailer 6
-
£390 GBP
$522 USD
View
A
Retailer 7
-
£408 GBP
€521 EUR
View
B+
Retailer 8
-
£554 GBP
$742 USD
View
B+
Retailer 9
-
£567 GBP
A$1,169 AUD
View
B+
Retailer 10
-
£716 GBP
$959 USD
View
B+
Retailer 11
-
£749 GBP
$1,004 USD
View
B
Retailer 12
-
£832 GBP
A$1,716 AUD
View
B
Retailer 13
-
£873 GBP
$1,170 USD
View
B
Retailer 14
-
£938 GBP
View
B
Retailer 15
-
£1,000 GBP
$1,340 USD
View
Most Expensive
B
Brilliant Earth
22208587A · Oct 30
£1,127 GBP
$1,510 USD
View
15 more retailers have this diamond
Prices start from £188 GBPSave up to £939 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 Round
£188 GBP