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Oval|Lab Grown|IGI

1.21ct D IF Oval Lab Grown Diamond

ID • D/IF • IGI LG743546435

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG743546435

Diamond specifications and retailer prices

From £192 GBP
$258 USD
As of November 3, 2026
Save £1,336 GBP (87%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: £1,529 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 LG743546435 or 743546435. Listed at 30 retailers as of November 3, 2026, with prices from £192 to £1,529, a £1,336 spread on the same certified stone. Brilliant Earth lists it at £1,529. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743546435
Dimensions8.68 × 6.10 × 3.66 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
8.68 mm6.10 mm1.21 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743546435
Side View
Table 60.0%Crown 34.6°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 60.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 3
Current: £1,529 GBP|Low: £192 GBP|High: £1,745 GBP|Avg: £636 GBP|-12.4%
Brilliant Earth
Retailer 2
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Retailer 20
November 3, 2026
Retailer 17£192 GBP
Retailer 9£248 GBP
Retailer 4£302 GBP
Retailer 19£358 GBP
Retailer 13£368 GBP
Retailer 8£392 GBP
Retailer 2£398 GBP
Retailer 15£455 GBP
Retailer 7£464 GBP
Retailer 18£519 GBP
Retailer 5£567 GBP
Retailer 3£687 GBP
Retailer 10£723 GBP
Retailer 11£724 GBP
Retailer 12£779 GBP
Retailer 14£853 GBP
Retailer 16£928 GBP
Retailer 6£962 GBP
Retailer 20£1,152 GBP
Brilliant Earth£1,529 GBP

39 data points across 20 retailers

30 retailers£192 GBP to £1,529 GBP

Retailer 1
-
£178 GBP
$239 USD
Price last confirmed 35 days ago
A
Retailer 2
-
£192 GBP
$258 USD
View
Final sale: no returns
Retailer 3
-
£199 GBP
$267 USD
View
Price last confirmed 20 days ago
Retailer 4
-
£207 GBP
$277 USD
View
Price last confirmed 39 days ago
A
Retailer 5
-
£213 GBP
$285 USD
View
Retailer 6
-
£213 GBP
$285 USD
View
Price last confirmed 24 days ago
Retailer 7
-
£213 GBP
$285 USD
View
Price last confirmed 31 days ago
Retailer 8
-
£218 GBP
$292 USD
View
Price last confirmed 34 days ago
A
Retailer 9
-
£248 GBP
HK$2,600 HKD
View
A
Retailer 10
-
£302 GBP
$405 USD
View
A
Retailer 11
-
£358 GBP
€457 EUR
View
A
Retailer 12
-
£368 GBP
ZAR 7,963 ZAR
View
A
Retailer 13
-
£392 GBP
$526 USD
View
A
Retailer 14
-
£398 GBP
View
A
Retailer 15
-
£455 GBP
A$938 AUD
View
A
Retailer 16
-
£464 GBP
$623 USD
View
B+
Retailer 17
-
£519 GBP
A$1,071 AUD
View
B+
Retailer 18
-
£567 GBP
$761 USD
View
Retailer 19
-
£685 GBP
$918 USD
View
Price last confirmed 24 days ago
B+
Retailer 20
-
£687 GBP
$921 USD
View
Retailer 21
-
£710 GBP
$952 USD
View
Price last confirmed 34 days ago
B+
Retailer 22
-
£723 GBP
$970 USD
View
B+
Retailer 23
-
£724 GBP
SGD 1,312 SGD
View
B+
Retailer 24
-
£779 GBP
$1,045 USD
View
B+
Retailer 25
-
£853 GBP
View
B+
Retailer 26
-
£928 GBP
A$1,914 AUD
View
B
Retailer 27
-
£962 GBP
$1,290 USD
View
Retailer 28
-
£1,152 GBP
$1,545 USD
View
Price last confirmed 13 days ago
Retailer 29
-
£1,160 GBP
$1,556 USD
View
Price last confirmed 75 days ago
Most Expensive
B
Brilliant Earth
16656348A · Nov 3
£1,529 GBP
$2,050 USD
View
29 more retailers have this diamond
Prices start from £192 GBPSave up to £1,336 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
£192 GBP