CaratHunter
Plans
Round|Lab Grown|IGI

1.20ct D IF Round Lab Grown Diamond

EX • D/IF • IGI LG839608224

Shape and cutting style on the report: Round brilliant

Certificate IGI LG839608224

Diamond specifications and retailer prices

From £183 GBP
$245 USD
As of November 1, 2026
Save £1,054 GBP (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,237 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 LG839608224 or 839608224. Listed at 15 retailers as of October 31, 2026, with prices from £183 to £1,237, a £1,054 spread on the same certified stone. Brilliant Earth lists it at £1,237. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839608224
Dimensions6.83 × 6.80 × 4.13 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 mm6.80 mm1.20 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839608224
Side View
Table 58.0%Crown 33.2°Girdle: Slightly ThickPavilion 40.4°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
A
Excellent
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: £1,237 GBP|Low: £176 GBP|High: £1,364 GBP|Avg: £550 GBP|-9.3%
Brilliant Earth
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
Retailer 15
November 2, 2026
Retailer 14£183 GBP
Retailer 5£204 GBP
Retailer 3£227 GBP
Retailer 7£306 GBP
Retailer 8£360 GBP
Retailer 10£392 GBP
Retailer 12£408 GBP
Retailer 9£426 GBP
Retailer 4£520 GBP
Retailer 13£553 GBP
Retailer 2£577 GBP
Retailer 6£768 GBP
Retailer 11£909 GBP
Retailer 15£997 GBP
Brilliant Earth£1,237 GBP

32 data points across 15 retailers

15 retailers£183 GBP to £1,237 GBP

A
Cheapest Retailer
-
£183 GBP
$245 USD
A
Retailer 2
-
£204 GBP
$274 USD
View
Final sale: no returns
Retailer 3
-
£227 GBP
$304 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
£306 GBP
$410 USD
View
A
Retailer 5
-
£360 GBP
View
A
Retailer 6
-
£392 GBP
ZAR 8,489 ZAR
View
A
Retailer 7
-
£408 GBP
€522 EUR
View
A
Retailer 8
-
£426 GBP
View
B+
Retailer 9
-
£520 GBP
$698 USD
View
B+
Retailer 10
-
£553 GBP
A$1,142 AUD
View
B+
Retailer 11
-
£577 GBP
$774 USD
View
B
Retailer 12
-
£768 GBP
$1,030 USD
View
B+
Retailer 13
-
£909 GBP
View
B
Retailer 14
-
£997 GBP
$1,339 USD
View
Most Expensive
B
Brilliant Earth
21662127A · Oct 31
£1,237 GBP
$1,660 USD
View
14 more retailers have this diamond
Prices start from £183 GBPSave up to £1,054 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
£183 GBP