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Round|Lab Grown|IGI

1.03ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG816645863

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816645863

Diamond specifications and retailer prices

From £157 GBP
$209 USD
As of October 28, 2026
Save £1,312 GBP (89%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,469 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.03ct lab-grown round diamond

This 1.03ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816645863 or 816645863. Listed at 23 retailers as of October 27, 2026, with prices from £157 to £1,469, a £1,312 spread on the same certified stone. Queensmith lists it at £1,469. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816645863
Dimensions6.49 × 6.44 × 4.02 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.49 mm6.44 mm1.03 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816645863
Side View
Table 57.0%Crown 35.4°Girdle: MediumPavilion 41°Culet: NoneDepth 62.2%

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 28
Current: £314 GBP|Low: £153 GBP|High: £991 GBP|Avg: £435 GBP|+5.5%
Retailer 1
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
October 30, 2026
Retailer 3£157 GBP
Retailer 9£282 GBP
Retailer 8£296 GBP
Retailer 10£298 GBP
Retailer 2£305 GBP
Retailer 1£314 GBP
Retailer 14£354 GBP
Retailer 15£361 GBP
Retailer 6£375 GBP
Retailer 12£424 GBP
Retailer 13£561 GBP
Retailer 11£580 GBP
Retailer 4£599 GBP
Retailer 5£803 GBP
Retailer 7£991 GBP

36 data points across 15 retailers

23 retailers£157 GBP to £1,469 GBP

Retailer 1
-
£133 GBP
$177 USD
Price last confirmed 28 days ago
A
Retailer 2
-
£157 GBP
$209 USD
View
Final sale: no returns
Retailer 3
-
£160 GBP
$213 USD
View
Price last confirmed 17 days ago
Retailer 4
-
£161 GBP
$214 USD
View
Price last confirmed 28 days ago
Retailer 5
-
£170 GBP
$226 USD
View
Price last confirmed 30 days ago
Retailer 6
-
£171 GBP
$228 USD
View
Price last confirmed 18 days ago
A
Retailer 7
-
£282 GBP
View
A
Retailer 8
-
£296 GBP
€375 EUR
View
A
Retailer 9
-
£298 GBP
ZAR 6,420 ZAR
View
A
Retailer 10
-
£305 GBP
$406 USD
View
A
Retailer 11
-
£314 GBP
View
A
Retailer 12
-
£354 GBP
$471 USD
View
A
Retailer 13
-
£361 GBP
$481 USD
View
A
Retailer 14
-
£375 GBP
A$768 AUD
View
B+
Retailer 15
-
£424 GBP
A$869 AUD
View
B+
Retailer 16
-
£448 GBP
$596 USD
View
Retailer 17
-
£552 GBP
$735 USD
View
Price last confirmed 30 days ago
B+
Retailer 18
-
£561 GBP
$747 USD
View
B+
Retailer 19
-
£580 GBP
A$1,188 AUD
View
B+
Retailer 20
-
£599 GBP
$798 USD
View
Retailer 21
-
£803 GBP
View
Price last confirmed 11 days ago
B
Retailer 22
-
£991 GBP
$1,320 USD
View
Most Expensive
B
Queensmith
LG816645863 · Oct 27
£1,469 GBP
View
22 more retailers have this diamond
Prices start from £157 GBPSave up to £1,312 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
1.03ct Round
£157 GBP