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Round|Lab Grown|IGI

1.21ct E VS1 Round Lab Grown Diamond

EX • E/VS1 • IGI LG680543385

Shape and cutting style on the report: Round brilliant

Certificate IGI LG680543385

Diamond specifications and retailer prices

From £127 GBP
$169 USD
As of October 29, 2026
Save £696 GBP (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £823 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 LG680543385 or 680543385. Listed at 22 retailers as of October 29, 2026, with prices from £127 to £823, a £696 spread on the same certified stone. Reve Diamonds lists it at £823. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG680543385
Dimensions6.71 × 6.76 × 4.26 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
6.71 mm6.76 mm1.21 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG680543385
Side View
Table 59.0%Crown 36.4°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 63.4%

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: £279 GBP|Low: £122 GBP|High: £823 GBP|Avg: £343 GBP|+6.2%
Retailer 1
Retailer 2
Retailer 3
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Retailer 7
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Retailer 11
Retailer 12
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Retailer 17
Reve Diamonds
October 30, 2026
Retailer 3£127 GBP
Retailer 4£142 GBP
Retailer 5£158 GBP
Retailer 8£158 GBP
Retailer 11£212 GBP
Retailer 10£263 GBP
Retailer 16£264 GBP
Retailer 12£270 GBP
Retailer 1£279 GBP
Retailer 9£308 GBP
Retailer 15£375 GBP
Retailer 13£384 GBP
Retailer 17£392 GBP
Retailer 6£401 GBP
Retailer 7£506 GBP
Retailer 2£578 GBP
Retailer 14£738 GBP
Reve Diamonds£823 GBP

43 data points across 18 retailers

22 retailers£127 GBP to £823 GBP

A
Cheapest Retailer
-
£127 GBP
$169 USD
A
Retailer 2
-
£142 GBP
$189 USD
View
Final sale: no returns
A
Retailer 3
-
£147 GBP
$196 USD
View
A
Retailer 4
-
£158 GBP
$210 USD
View
A
Retailer 5
-
£158 GBP
$210 USD
View
B+
Retailer 6
-
£212 GBP
$282 USD
View
A
Retailer 7
-
£263 GBP
€334 EUR
View
Retailer 8
-
£264 GBP
View
Price last confirmed 13 days ago
A
Retailer 9
-
£270 GBP
ZAR 5,819 ZAR
View
A
Retailer 10
-
£279 GBP
View
A
Retailer 11
-
£291 GBP
$388 USD
View
B+
Retailer 12
-
£308 GBP
$410 USD
View
Retailer 13
-
£375 GBP
$500 USD
View
Price last confirmed 12 days ago
B+
Retailer 14
-
£384 GBP
A$787 AUD
View
B
Retailer 15
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£392 GBP
$522 USD
View
B+
Retailer 16
-
£401 GBP
$534 USD
View
B
Retailer 17
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£507 GBP
$675 USD
View
B
Retailer 18
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£517 GBP
$688 USD
View
B
Retailer 19
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£548 GBP
$729 USD
View
B
Retailer 20
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£578 GBP
$770 USD
View
B
Retailer 21
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£738 GBP
View
Most Expensive
B
Reve Diamonds
FCD06DAEA · Oct 30
£823 GBP
$1,095 USD
View
21 more retailers have this diamond
Prices start from £127 GBPSave up to £696 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
£127 GBP