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Radiant|Lab Grown|IGI

1.30ct D FL Radiant Lab Grown Diamond

VG • D/FL • IGI LG831604041

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG831604041

Diamond specifications and retailer prices

From £315 GBP
HK$3,300 HKD
As of November 1, 2026
Save £2,256 GBP (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,571 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.3ct lab-grown radiant diamond

This 1.3ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG831604041 or 831604041. Listed at 14 retailers as of November 1, 2026, with prices from £315 to £2,571, a £2,256 spread on the same certified stone. Brilliant Earth lists it at £2,571. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.30
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle32.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831604041
Dimensions7.91 × 5.62 × 3.54 mm
L/W Ratio1.41
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
7.91 mm5.62 mm1.30 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831604041
Side View
Table 63.0%Crown 37.4°Girdle: Slightly ThickPavilion 32.9°Culet: NoneDepth 63.0%

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: Nov 1
Current: £2,571 GBP|Low: £315 GBP|High: £2,973 GBP|Avg: £972 GBP|-13.5%
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
November 2, 2026
Retailer 8£315 GBP
Retailer 3£375 GBP
Retailer 11£393 GBP
Retailer 5£549 GBP
Retailer 7£598 GBP
Retailer 12£616 GBP
Retailer 14£644 GBP
Retailer 4£690 GBP
Retailer 2£712 GBP
Retailer 9£919 GBP
Retailer 10£1,031 GBP
Retailer 6£1,232 GBP
Retailer 13£1,473 GBP
Brilliant Earth£2,571 GBP

32 data points across 14 retailers

14 retailers£315 GBP to £2,571 GBP

A
Cheapest Retailer
-
£315 GBP
HK$3,300 HKD
Retailer 2
-
£375 GBP
$503 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
£393 GBP
$528 USD
View
B+
Retailer 4
-
£549 GBP
$737 USD
View
B+
Retailer 5
-
£598 GBP
€764 EUR
View
B+
Retailer 6
-
£616 GBP
View
B+
Retailer 7
-
£644 GBP
ZAR 13,969 ZAR
View
B+
Retailer 8
-
£690 GBP
$926 USD
View
B+
Retailer 9
-
£712 GBP
$955 USD
View
B
Retailer 10
-
£919 GBP
SGD 1,666 SGD
View
B
Retailer 11
-
£1,031 GBP
$1,383 USD
View
B
Retailer 12
-
£1,232 GBP
$1,653 USD
View
B
Retailer 13
-
£1,473 GBP
View
Most Expensive
B
Brilliant Earth
21605029A · Nov 2
£2,571 GBP
$3,450 USD
View
13 more retailers have this diamond
Prices start from £315 GBPSave up to £2,256 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
1.30ct Radiant
£315 GBP