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Round|Lab Grown|IGI

1.22ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG845656511

Shape and cutting style on the report: Round brilliant

Certificate IGI LG845656511

Diamond specifications and retailer prices

From £212 GBP
$284 USD
As of October 28, 2026
Save £1,079 GBP (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,291 GBP at Brilliant Earth · As of October 29, 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 LG845656511 or 845656511. Listed at 14 retailers as of October 28, 2026, with prices from £212 to £1,291, a £1,079 spread on the same certified stone. Brilliant Earth lists it at £1,291. 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 angle34.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845656511
Dimensions6.88 × 6.91 × 4.22 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
6.88 mm6.91 mm1.22 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845656511
Side View
Table 59.0%Crown 34.5°Girdle: MediumPavilion 41°Culet: NoneDepth 61.2%

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 28
Current: £375 GBP|Low: £212 GBP|High: £1,008 GBP|Avg: £486 GBP|-0.7%
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
October 30, 2026
Retailer 10£212 GBP
Retailer 9£258 GBP
Retailer 11£317 GBP
Retailer 4£355 GBP
Retailer 1£375 GBP
Retailer 7£385 GBP
Retailer 13£405 GBP
Retailer 6£448 GBP
Retailer 12£573 GBP
Retailer 5£731 GBP
Retailer 3£759 GBP
Retailer 8£949 GBP
Retailer 2£1,008 GBP

8 data points across 13 retailers

14 retailers£212 GBP to £1,291 GBP

A
Cheapest Retailer
-
£212 GBP
$284 USD
Final sale: no returns
A
Retailer 2
-
£258 GBP
HK$2,700 HKD
View
A
Retailer 3
-
£317 GBP
$425 USD
View
A
Retailer 4
-
£355 GBP
$475 USD
View
A
Retailer 5
-
£375 GBP
View
A
Retailer 6
-
£385 GBP
€491 EUR
View
A
Retailer 7
-
£405 GBP
ZAR 8,761 ZAR
View
A
Retailer 8
-
£448 GBP
View
B+
Retailer 9
-
£573 GBP
A$1,182 AUD
View
B+
Retailer 10
-
£731 GBP
$980 USD
View
B+
Retailer 11
-
£759 GBP
SGD 1,375 SGD
View
B
Retailer 12
-
£949 GBP
View
B
Retailer 13
-
£1,008 GBP
$1,350 USD
View
Most Expensive
B
Brilliant Earth
22235677A · Oct 29
£1,291 GBP
$1,730 USD
View
13 more retailers have this diamond
Prices start from £212 GBPSave up to £1,079 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
£212 GBP