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Round|Lab Grown|IGI

1.20ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG754594296

Shape and cutting style on the report: Round brilliant

Certificate IGI LG754594296

Diamond specifications and retailer prices

From £187 GBP
$251 USD
As of November 1, 2026
Save £1,326 GBP (88%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,513 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.2ct lab-grown round diamond

This 1.2ct 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 LG754594296 or 754594296. Listed at 7 retailers as of October 31, 2026, with prices from £187 to £1,513, a £1,326 spread on the same certified stone. Brilliant Earth lists it at £1,513. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594296
Dimensions6.77 × 6.81 × 4.21 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.77 mm6.81 mm1.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594296
Side View
Table 57.0%Crown 34.7°Girdle: MediumPavilion 40.7°Culet: NoneDepth 62.0%

Caratlytics Score

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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 1
Current: £1,513 GBP|Low: £187 GBP|High: £2,034 GBP|Avg: £779 GBP
Brilliant Earth
Retailer 2
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Retailer 12
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Retailer 17
October 29, 2026
Retailer 2£187 GBP
Retailer 13£217 GBP
Retailer 12£232 GBP
Retailer 14£234 GBP
Retailer 8£325 GBP
Retailer 3£406 GBP
Retailer 10£419 GBP
Retailer 4£560 GBP
Retailer 11£745 GBP
Retailer 16£783 GBP
Retailer 7£813 GBP
Retailer 15£968 GBP
Retailer 5£1,128 GBP
Retailer 9£1,175 GBP
Retailer 17£1,259 GBP
Brilliant Earth£1,513 GBP
Retailer 6£2,034 GBP

14 data points across 17 retailers

7 retailers£187 GBP to £1,513 GBP

A+
Cheapest Retailer
-
£187 GBP
$251 USD
A
Retailer 2
-
£217 GBP
$291 USD
View
A
Retailer 3
-
£232 GBP
$311 USD
View
Retailer 4
-
£234 GBP
$314 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£419 GBP
$562 USD
View
B+
Retailer 6
-
£745 GBP
$1,000 USD
View
Most Expensive
B
Brilliant Earth
17496141Y · Oct 31
£1,513 GBP
$2,030 USD
View
6 more retailers have this diamond
Prices start from £187 GBPSave up to £1,326 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+
1.20ct Round
£187 GBP