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Round|Lab Grown|IGI

1.21ct E VS1 Round Lab Grown Diamond

ID • E/VS1 • IGI LG710543354

Shape and cutting style on the report: Round brilliant

Certificate IGI LG710543354

Diamond specifications and retailer prices

From £132 GBP
$176 USD
As of October 29, 2026
Save £706 GBP (84%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £838 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG710543354 or 710543354. Listed at 25 retailers as of October 29, 2026, with prices from £132 to £838, a £706 spread on the same certified stone. Reve Diamonds lists it at £838. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG710543354
Dimensions6.76 × 6.83 × 4.20 mm
L/W Ratio1.01
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
6.76 mm6.83 mm1.21 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG710543354
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.8%

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: Oct 29
Current: £293 GBP|Low: £131 GBP|High: £838 GBP|Avg: £380 GBP|+7.5%
Retailer 1
Retailer 2
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Retailer 21
Reve Diamonds
October 30, 2026
Retailer 10£132 GBP
Retailer 8£147 GBP
Retailer 19£153 GBP
Retailer 3£164 GBP
Retailer 5£164 GBP
Retailer 17£281 GBP
Retailer 4£291 GBP
Retailer 1£293 GBP
Retailer 20£294 GBP
Retailer 15£316 GBP
Retailer 2£350 GBP
Retailer 13£365 GBP
Retailer 21£379 GBP
Retailer 18£399 GBP
Retailer 6£430 GBP
Retailer 7£511 GBP
Retailer 16£515 GBP
Retailer 11£526 GBP
Retailer 14£558 GBP
Retailer 9£567 GBP
Retailer 12£769 GBP
Reve Diamonds£838 GBP

44 data points across 22 retailers

25 retailers£132 GBP to £838 GBP

Retailer 1
-
£131 GBP
$174 USD
Price last confirmed 38 days ago
A
Retailer 2
-
£132 GBP
$176 USD
View
A
Retailer 3
-
£147 GBP
$196 USD
View
Final sale: no returns
A
Retailer 4
-
£153 GBP
$204 USD
View
Retailer 5
-
£160 GBP
$213 USD
View
Price last confirmed 38 days ago
A
Retailer 6
-
£164 GBP
$218 USD
View
A
Retailer 7
-
£164 GBP
$218 USD
View
A
Retailer 8
-
£281 GBP
ZAR 6,043 ZAR
View
A
Retailer 9
-
£291 GBP
$388 USD
View
A
Retailer 10
-
£293 GBP
View
A
Retailer 11
-
£294 GBP
$391 USD
View
B+
Retailer 12
-
£316 GBP
€401 EUR
View
B+
Retailer 13
-
£350 GBP
$466 USD
View
B+
Retailer 14
-
£365 GBP
A$748 AUD
View
Retailer 15
-
£379 GBP
$505 USD
View
Price last confirmed 12 days ago
B+
Retailer 16
-
£399 GBP
A$818 AUD
View
B+
Retailer 17
-
£430 GBP
$573 USD
View
B
Retailer 18
-
£511 GBP
$680 USD
View
B+
Retailer 19
-
£515 GBP
A$1,056 AUD
View
Retailer 20
-
£521 GBP
$694 USD
View
Price last confirmed 39 days ago
B
Retailer 21
-
£526 GBP
$700 USD
View
B
Retailer 22
-
£567 GBP
$755 USD
View
B
Retailer 23
-
£569 GBP
$758 USD
View
B
Retailer 24
-
£769 GBP
View
Most Expensive
B
Reve Diamonds
EE5E38604 · Oct 30
£838 GBP
$1,116 USD
View
24 more retailers have this diamond
Prices start from £132 GBPSave up to £706 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 Round
£132 GBP