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Round|Lab Grown|IGI

1.51ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG808630209

Shape and cutting style on the report: Round brilliant

Certificate IGI LG808630209

Diamond specifications and retailer prices

From £251 GBP
$337 USD
As of November 1, 2026
Save £2,446 GBP (91%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £2,698 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG808630209 or 808630209. Listed at 24 retailers as of October 31, 2026, with prices from £251 to £2,698, a £2,446 spread on the same certified stone. Brilliant Earth lists it at £2,698. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG808630209
Dimensions7.45 × 7.48 × 4.47 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.45 mm7.48 mm1.51 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG808630209
Side View
Table 60.0%Crown 33°Girdle: THN-MEDPavilion 41.2°Culet: NoneDepth 59.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,698 GBP|Low: £251 GBP|High: £2,698 GBP|Avg: £835 GBP
Brilliant Earth
Retailer 2
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November 2, 2026
Retailer 21£251 GBP
Retailer 7£291 GBP
Retailer 3£311 GBP
Retailer 10£311 GBP
Retailer 11£353 GBP
Retailer 22£417 GBP
Retailer 20£425 GBP
Retailer 2£491 GBP
Retailer 4£502 GBP
Retailer 13£538 GBP
Retailer 16£557 GBP
Retailer 12£646 GBP
Retailer 18£724 GBP
Retailer 19£727 GBP
Retailer 5£1,002 GBP
Retailer 6£1,010 GBP
Retailer 9£1,034 GBP
Retailer 15£1,180 GBP
Retailer 17£1,249 GBP
Retailer 8£1,343 GBP
Retailer 14£1,461 GBP
Brilliant Earth£2,698 GBP

32 data points across 22 retailers

24 retailers£251 GBP to £2,698 GBP

A
Cheapest Retailer
-
£251 GBP
$337 USD
A
Retailer 2
-
£291 GBP
$391 USD
View
A
Retailer 3
-
£311 GBP
$418 USD
View
Retailer 4
-
£311 GBP
$418 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£353 GBP
HK$3,700 HKD
View
A
Retailer 6
-
£417 GBP
$560 USD
View
A
Retailer 7
-
£425 GBP
$570 USD
View
A
Retailer 8
-
£491 GBP
€628 EUR
View
A
Retailer 9
-
£502 GBP
$674 USD
View
A
Retailer 10
-
£538 GBP
ZAR 11,654 ZAR
View
A
Retailer 11
-
£549 GBP
€702 EUR
View
A
Retailer 12
-
£557 GBP
View
B+
Retailer 13
-
£646 GBP
$867 USD
View
B+
Retailer 14
-
£724 GBP
$971 USD
View
B+
Retailer 15
-
£727 GBP
A$1,500 AUD
View
B+
Retailer 16
-
£1,002 GBP
$1,345 USD
View
B+
Retailer 17
-
£1,010 GBP
SGD 1,831 SGD
View
B
Retailer 18
-
£1,034 GBP
$1,388 USD
View
B
Retailer 19
-
£1,120 GBP
$1,503 USD
View
B
Retailer 20
-
£1,180 GBP
$1,584 USD
View
B+
Retailer 21
-
£1,249 GBP
View
B
Retailer 22
-
£1,343 GBP
$1,802 USD
View
Retailer 23
-
£1,461 GBP
$1,960 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
20295849A · Oct 31
£2,698 GBP
$3,620 USD
View
23 more retailers have this diamond
Prices start from £251 GBPSave up to £2,446 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
1.51ct Round
£251 GBP