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Oval|Lab Grown|IGI

1.21ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG739579757

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG739579757

Diamond specifications and retailer prices

From £195 GBP
$261 USD
As of November 1, 2026
Save £1,386 GBP (88%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,581 GBP at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.21ct lab-grown oval diamond

This 1.21ct lab-grown oval 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 LG739579757 or 739579757. Listed at 24 retailers as of November 1, 2026, with prices from £195 to £1,581, a £1,386 spread on the same certified stone. Brilliant Earth lists it at £1,581. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739579757
Dimensions8.44 × 5.95 × 3.80 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
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
8.44 mm5.95 mm1.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739579757
Side View
Table 59.0%Crown 34.6°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 63.9%

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: Nov 1
Current: £1,581 GBP|Low: £193 GBP|High: £2,341 GBP|Avg: £606 GBP|-32.5%
Brilliant Earth
Retailer 2
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November 3, 2026
Retailer 10£195 GBP
Retailer 17£217 GBP
Retailer 3£226 GBP
Retailer 6£242 GBP
Retailer 12£242 GBP
Retailer 19£362 GBP
Retailer 7£402 GBP
Retailer 14£416 GBP
Retailer 5£428 GBP
Retailer 20£450 GBP
Retailer 2£461 GBP
Retailer 4£576 GBP
Retailer 18£587 GBP
Retailer 13£649 GBP
Retailer 9£775 GBP
Retailer 11£814 GBP
Retailer 16£928 GBP
Retailer 15£967 GBP
Retailer 8£1,035 GBP
Brilliant Earth£1,581 GBP

37 data points across 20 retailers

24 retailers£195 GBP to £1,581 GBP

Retailer 1
-
£193 GBP
$259 USD
Price last confirmed 42 days ago
A
Retailer 2
-
£195 GBP
$261 USD
View
A
Retailer 3
-
£217 GBP
$291 USD
View
Final sale: no returns
A
Retailer 4
-
£226 GBP
$303 USD
View
Retailer 5
-
£236 GBP
$317 USD
View
Price last confirmed 42 days ago
A
Retailer 6
-
£242 GBP
$324 USD
View
Retailer 7
-
£242 GBP
$324 USD
View
Price last confirmed 9 days ago
A
Retailer 8
-
£362 GBP
$485 USD
View
A
Retailer 9
-
£402 GBP
$539 USD
View
A
Retailer 10
-
£416 GBP
ZAR 9,014 ZAR
View
A
Retailer 11
-
£428 GBP
$574 USD
View
B+
Retailer 12
-
£450 GBP
€575 EUR
View
A
Retailer 13
-
£461 GBP
View
B+
Retailer 14
-
£576 GBP
$773 USD
View
B+
Retailer 15
-
£587 GBP
A$1,211 AUD
View
B+
Retailer 16
-
£649 GBP
$871 USD
View
B+
Retailer 17
-
£775 GBP
$1,040 USD
View
B
Retailer 18
-
£814 GBP
$1,091 USD
View
B
Retailer 19
-
£891 GBP
$1,195 USD
View
B
Retailer 20
-
£928 GBP
A$1,914 AUD
View
B+
Retailer 21
-
£967 GBP
View
B
Retailer 22
-
£1,035 GBP
$1,388 USD
View
Retailer 23
-
£1,152 GBP
$1,545 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
16737142A · Nov 3
£1,581 GBP
$2,120 USD
View
23 more retailers have this diamond
Prices start from £195 GBPSave up to £1,386 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
1.21ct Oval
£195 GBP