Round|Lab Grown|IGI

1.22ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG811633128

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811633128

Diamond specifications and retailer prices

From £497 GBP
A$1,018 AUD
As of October 29, 2026
Save £1,223 GBP (71%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,764 GBP at Queensmith · As of October 22, 2026
View at Queensmith

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 LG811633128 or 811633128. Listed at 23 retailers as of October 24, 2026, with a 246% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle35.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811633128
Dimensions6.83 × 6.81 × 4.18 mm
L/W Ratio1.00
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
6.83 mm6.81 mm1.22 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811633128
Side View
Table 60.0%Crown 35.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.3%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £497 GBP|Low: £210 GBP|High: £1,855 GBP|Avg: £540 GBP
Retailer 1
Retailer 2
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Retailer 20
October 29, 2026
Retailer 3£219 GBP
Retailer 11£245 GBP
Retailer 9£254 GBP
Retailer 6£271 GBP
Retailer 13£271 GBP
Retailer 7£364 GBP
Retailer 14£430 GBP
Retailer 8£458 GBP
Retailer 15£462 GBP
Retailer 19£462 GBP
Retailer 12£480 GBP
Retailer 1£497 GBP
Retailer 17£518 GBP
Retailer 18£668 GBP
Retailer 20£834 GBP
Retailer 5£864 GBP
Retailer 10£872 GBP
Retailer 4£1,040 GBP
Retailer 2£1,099 GBP
Retailer 16£1,720 GBP

39 data points across 20 retailers

23 retailers£497 GBP to £1,720 GBP

Retailer 1
-
£219 GBP
$291 USD
Price last confirmed 9 days ago
Retailer 2
-
£254 GBP
$338 USD
View
Price last confirmed 10 days ago
Retailer 3
-
£271 GBP
$361 USD
View
Price last confirmed 9 days ago
Retailer 4
-
£271 GBP
$361 USD
View
Price last confirmed 14 days ago
Retailer 5
-
£364 GBP
$485 USD
View
Price last confirmed 9 days ago
Retailer 6
-
£430 GBP
View
Price last confirmed 8 days ago
Retailer 7
-
£458 GBP
$610 USD
View
Price last confirmed 8 days ago
Retailer 8
-
£462 GBP
View
Price last confirmed 8 days ago
Retailer 9
-
£462 GBP
ZAR 9,937 ZAR
View
Price last confirmed 11 days ago
Retailer 10
-
£480 GBP
€609 EUR
View
Price last confirmed 7 days ago
B+
Retailer 11
-
£497 GBP
A$1,018 AUD
View
Retailer 12
-
£518 GBP
$690 USD
View
Price last confirmed 6 days ago
B+
Retailer 13
-
£552 GBP
$735 USD
View
Retailer 14
-
£668 GBP
A$1,368 AUD
View
Price last confirmed 11 days ago
Retailer 15
-
£834 GBP
$1,110 USD
View
Price last confirmed 7 days ago
Retailer 16
-
£864 GBP
A$1,771 AUD
View
Price last confirmed 25 days ago
Retailer 17
-
£872 GBP
$1,161 USD
View
Price last confirmed 9 days ago
Retailer 18
-
£909 GBP
$1,210 USD
View
Price last confirmed 9 days ago
Retailer 19
-
£1,040 GBP
$1,385 USD
View
Price last confirmed 23 days ago
Retailer 20
-
£1,099 GBP
View
Price last confirmed 15 days ago
Retailer 21
-
£1,115 GBP
$1,485 USD
View
Price last confirmed 9 days ago
B
Retailer 22
-
£1,720 GBP
$2,290 USD
View
Most Expensive
Queensmith
LG811633128 · Oct 22
£1,764 GBP
View
Price last confirmed 8 days ago
22 more retailers have this diamond
Prices start from £497 GBPSave up to £1,223 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.

B+
1.22ct Round
£497 GBP