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Round|Lab Grown|IGI

1.03ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG783641966

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783641966

Diamond specifications and retailer prices

From £279 GBP
$371 USD
As of October 29, 2026
Save £1,459 GBP (84%) 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 LG783641966 or 783641966. Listed at 23 retailers as of October 28, 2026, with prices from £279 to £1,738, a £1,459 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 angle34.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783641966
Dimensions6.50 × 6.48 × 3.96 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
6.50 mm6.48 mm1.03 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783641966
Side View
Table 59.0%Crown 34.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.0%

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: £268 GBP|High: £1,738 GBP|Avg: £752 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
Retailer 14
Retailer 15
October 29, 2026
Retailer 3£279 GBP
Retailer 14£324 GBP
Retailer 5£346 GBP
Retailer 6£346 GBP
Retailer 12£440 GBP
Retailer 7£465 GBP
Retailer 8£552 GBP
Retailer 15£571 GBP
Retailer 10£595 GBP
Retailer 11£620 GBP
Retailer 13£1,015 GBP
Retailer 4£1,112 GBP
Retailer 9£1,173 GBP
Retailer 2£1,359 GBP
Brilliant Earth£1,738 GBP

33 data points across 15 retailers

23 retailers£279 GBP to £1,738 GBP

A
Cheapest Retailer
-
£279 GBP
$371 USD
A
Retailer 2
-
£312 GBP
$414 USD
View
Final sale: no returns
A
Retailer 3
-
£324 GBP
$430 USD
View
A
Retailer 4
-
£346 GBP
$460 USD
View
Price last confirmed 27 days ago
A
Retailer 5
-
£346 GBP
$460 USD
View
A
Retailer 6
-
£346 GBP
$460 USD
View
B+
Retailer 7
-
£440 GBP
$585 USD
View
B+
Retailer 8
-
£440 GBP
$585 USD
View
B+
Retailer 9
-
£465 GBP
$618 USD
View
B+
Retailer 10
-
£522 GBP
$694 USD
View
B+
Retailer 11
-
£552 GBP
View
B+
Retailer 12
-
£571 GBP
A$1,168 AUD
View
B+
Retailer 13
-
£595 GBP
ZAR 12,766 ZAR
View
B+
Retailer 14
-
£620 GBP
View
B
Retailer 15
-
£864 GBP
$1,148 USD
View
B
Retailer 16
-
£919 GBP
SGD 1,650 SGD
View
B
Retailer 17
-
£1,015 GBP
$1,349 USD
View
B
Retailer 18
-
£1,112 GBP
$1,478 USD
View
B
Retailer 19
-
£1,142 GBP
$1,518 USD
View
B
Retailer 20
-
£1,173 GBP
€1,485 EUR
View
B
Retailer 21
-
£1,309 GBP
$1,739 USD
View
B
Retailer 22
-
£1,359 GBP
View
Most Expensive
B
Brilliant Earth
18648375A · Oct 28
£1,738 GBP
$2,310 USD
View
22 more retailers have this diamond
Prices start from £279 GBPSave up to £1,459 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
£279 GBP