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Round|Lab Grown|IGI

1.03ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG788624698

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788624698

Diamond specifications and retailer prices

From £246 GBP
$327 USD
As of October 29, 2026
Save £1,492 GBP (86%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,738 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.03ct lab-grown round diamond

This 1.03ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG788624698 or 788624698. Listed at 23 retailers as of October 28, 2026, with prices from £246 to £1,738, a £1,492 spread on the same certified stone. Brilliant Earth lists it at £1,738. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788624698
Dimensions6.59 × 6.60 × 3.91 mm
L/W Ratio1.00
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
6.59 mm6.60 mm1.03 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788624698
Side View
Table 58.0%Crown 32.9°Girdle: MediumPavilion 40.5°Culet: NoneDepth 59.3%

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: £1,738 GBP|Low: £236 GBP|High: £1,738 GBP|Avg: £604 GBP
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
October 29, 2026
Retailer 13£246 GBP
Retailer 3£275 GBP
Retailer 5£305 GBP
Retailer 11£305 GBP
Retailer 4£410 GBP
Retailer 9£421 GBP
Retailer 2£486 GBP
Retailer 6£487 GBP
Retailer 7£524 GBP
Retailer 8£540 GBP
Retailer 12£753 GBP
Retailer 10£1,228 GBP
Brilliant Earth£1,738 GBP

36 data points across 13 retailers

23 retailers£246 GBP to £1,738 GBP

A
Cheapest Retailer
-
£246 GBP
$327 USD
A
Retailer 2
-
£275 GBP
$365 USD
View
Final sale: no returns
A
Retailer 3
-
£285 GBP
$379 USD
View
A
Retailer 4
-
£305 GBP
$405 USD
View
A
Retailer 5
-
£305 GBP
$405 USD
View
A
Retailer 6
-
£337 GBP
HK$3,500 HKD
View
A
Retailer 7
-
£410 GBP
$545 USD
View
B+
Retailer 8
-
£421 GBP
$560 USD
View
B+
Retailer 9
-
£429 GBP
$570 USD
View
B+
Retailer 10
-
£484 GBP
$643 USD
View
B+
Retailer 11
-
£486 GBP
View
B+
Retailer 12
-
£487 GBP
€616 EUR
View
B+
Retailer 13
-
£524 GBP
ZAR 11,240 ZAR
View
B+
Retailer 14
-
£540 GBP
View
B
Retailer 15
-
£753 GBP
$1,001 USD
View
B
Retailer 16
-
£813 GBP
SGD 1,460 SGD
View
B
Retailer 17
-
£819 GBP
$1,088 USD
View
Price last confirmed 27 days ago
B
Retailer 18
-
£980 GBP
$1,302 USD
View
B
Retailer 19
-
£1,013 GBP
$1,346 USD
View
B
Retailer 20
-
£1,098 GBP
$1,459 USD
View
B
Retailer 21
-
£1,202 GBP
$1,597 USD
View
B
Retailer 22
-
£1,228 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
20043085A · Oct 28
£1,738 GBP
$2,310 USD
View
22 more retailers have this diamond
Prices start from £246 GBPSave up to £1,492 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
£246 GBP