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Oval|Lab Grown|IGI

1.21ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG700548458

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG700548458

Diamond specifications and retailer prices

From £169 GBP
$227 USD
As of November 3, 2026
Save £1,165 GBP (87%) vs most expensive(unlock to see where)
23 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 LG700548458 or 700548458. Listed at 23 retailers as of November 3, 2026, with prices from £169 to £1,335, a £1,165 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 angle35.8°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700548458
Dimensions8.60 × 5.89 × 3.72 mm
L/W Ratio1.46
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
8.60 mm5.89 mm1.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700548458
Side View
Table 59.0%Crown 35.8°Girdle: MED-STKPavilion 40°Culet: NoneDepth 63.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 3
Current: £1,335 GBP|Low: £149 GBP|High: £1,544 GBP|Avg: £528 GBP|-13.5%
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
Retailer 16
Retailer 17
November 3, 2026
Retailer 8£155 GBP
Retailer 2£169 GBP
Retailer 9£192 GBP
Retailer 16£265 GBP
Retailer 14£318 GBP
Retailer 12£324 GBP
Retailer 10£345 GBP
Retailer 4£400 GBP
Retailer 5£426 GBP
Retailer 11£458 GBP
Retailer 15£479 GBP
Retailer 3£561 GBP
Retailer 6£643 GBP
Retailer 13£878 GBP
Retailer 17£897 GBP
Retailer 7£1,160 GBP
Brilliant Earth£1,335 GBP

39 data points across 17 retailers

23 retailers£169 GBP to £1,335 GBP

Retailer 1
-
£155 GBP
$208 USD
Price last confirmed 23 days ago
Retailer 2
-
£158 GBP
$212 USD
View
Price last confirmed 41 days ago
A
Retailer 3
-
£169 GBP
$227 USD
View
Final sale: no returns
Retailer 4
-
£183 GBP
$245 USD
View
Price last confirmed 39 days ago
Retailer 5
-
£192 GBP
$258 USD
View
Price last confirmed 22 days ago
Retailer 6
-
£192 GBP
$258 USD
View
Price last confirmed 31 days ago
Retailer 7
-
£193 GBP
$259 USD
View
Price last confirmed 39 days ago
B+
Retailer 8
-
£265 GBP
$355 USD
View
A
Retailer 9
-
£318 GBP
€406 EUR
View
A
Retailer 10
-
£324 GBP
ZAR 7,020 ZAR
View
A
Retailer 11
-
£345 GBP
View
A
Retailer 12
-
£400 GBP
$537 USD
View
A
Retailer 13
-
£426 GBP
$571 USD
View
A
Retailer 14
-
£458 GBP
A$944 AUD
View
B+
Retailer 15
-
£479 GBP
$642 USD
View
B+
Retailer 16
-
£561 GBP
$752 USD
View
Retailer 17
-
£618 GBP
$829 USD
View
Price last confirmed 26 days ago
Retailer 18
-
£620 GBP
$832 USD
View
Price last confirmed 8 days ago
B+
Retailer 19
-
£643 GBP
$863 USD
View
B
Retailer 20
-
£878 GBP
View
B
Retailer 21
-
£897 GBP
$1,203 USD
View
Retailer 22
-
£1,160 GBP
$1,555 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
17664276A · Nov 3
£1,335 GBP
$1,790 USD
View
22 more retailers have this diamond
Prices start from £169 GBPSave up to £1,165 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
£169 GBP