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Oval|Lab Grown|IGI

1.21ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG776609259

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG776609259

Diamond specifications and retailer prices

From £160 GBP
$215 USD
As of November 1, 2026
Save £1,174 GBP (88%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,335 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 LG776609259 or 776609259. Listed at 21 retailers as of November 1, 2026, with prices from £160 to £1,335, a £1,174 spread on the same certified stone. Brilliant Earth lists it at £1,335. 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 angle34.3°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776609259
Dimensions8.64 × 6.04 × 3.72 mm
L/W Ratio1.43
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
8.64 mm6.04 mm1.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776609259
Side View
Table 58.0%Crown 34.3°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 61.6%

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: £1,335 GBP|Low: £160 GBP|High: £1,655 GBP|Avg: £532 GBP|-19.4%
Brilliant Earth
Retailer 2
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November 3, 2026
Retailer 20£160 GBP
Retailer 10£178 GBP
Retailer 6£186 GBP
Retailer 3£198 GBP
Retailer 17£323 GBP
Retailer 12£341 GBP
Retailer 15£343 GBP
Retailer 2£368 GBP
Retailer 8£435 GBP
Retailer 18£450 GBP
Retailer 13£486 GBP
Retailer 14£513 GBP
Retailer 9£564 GBP
Retailer 5£639 GBP
Retailer 4£646 GBP
Retailer 11£678 GBP
Retailer 7£773 GBP
Retailer 16£796 GBP
Retailer 19£928 GBP
Brilliant Earth£1,335 GBP

42 data points across 20 retailers

21 retailers£160 GBP to £1,335 GBP

A
Cheapest Retailer
-
£160 GBP
$215 USD
A
Retailer 2
-
£178 GBP
$239 USD
View
Final sale: no returns
A
Retailer 3
-
£186 GBP
$249 USD
View
A
Retailer 4
-
£198 GBP
$266 USD
View
A
Retailer 5
-
£323 GBP
€413 EUR
View
A
Retailer 6
-
£341 GBP
$457 USD
View
A
Retailer 7
-
£343 GBP
ZAR 7,432 ZAR
View
A
Retailer 8
-
£368 GBP
View
A
Retailer 9
-
£435 GBP
$584 USD
View
A
Retailer 10
-
£450 GBP
A$928 AUD
View
A
Retailer 11
-
£486 GBP
A$1,003 AUD
View
B+
Retailer 12
-
£513 GBP
$688 USD
View
B+
Retailer 13
-
£564 GBP
$757 USD
View
B+
Retailer 14
-
£639 GBP
$857 USD
View
B+
Retailer 15
-
£646 GBP
SGD 1,171 SGD
View
B+
Retailer 16
-
£678 GBP
$910 USD
View
B+
Retailer 17
-
£773 GBP
View
B+
Retailer 18
-
£796 GBP
View
B
Retailer 19
-
£928 GBP
A$1,914 AUD
View
Retailer 20
-
£1,152 GBP
$1,545 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
18180993A · Nov 3
£1,335 GBP
$1,790 USD
View
20 more retailers have this diamond
Prices start from £160 GBPSave up to £1,174 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
£160 GBP