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Round|Lab Grown|IGI

1.51ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG786634063

Shape and cutting style on the report: Round brilliant

Certificate IGI LG786634063

Diamond specifications and retailer prices

From £1,254 GBP
$1,680 USD
As of October 29, 2026
Save £2,560 GBP (67%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £5,309 GBP at With Clarity · As of October 31, 2026
View at With Clarity

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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG786634063 or 786634063. Listed at 22 retailers as of October 29, 2026, with a 204% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786634063
Dimensions7.33 × 7.37 × 4.53 mm
L/W Ratio1.01
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
7.33 mm7.37 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786634063
Side View
Table 58.0%Crown 35.2°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £2,037 GBP|Low: £1,204 GBP|High: £4,205 GBP|Avg: £2,492 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 10£1,254 GBP
Retailer 2£1,455 GBP
Retailer 8£1,582 GBP
Retailer 5£1,997 GBP
Retailer 1£2,037 GBP
Retailer 11£2,081 GBP
Retailer 4£2,253 GBP
Retailer 6£2,674 GBP
Retailer 9£3,814 GBP
Retailer 3£3,920 GBP
Retailer 7£4,177 GBP

37 data points across 11 retailers

22 retailers£1,254 GBP to £3,814 GBP

B+
Cheapest Retailer
-
£1,254 GBP
$1,680 USD
B+
Retailer 2
-
£1,364 GBP
$1,828 USD
View
B+
Retailer 3
-
£1,405 GBP
$1,882 USD
View
Final sale: no returns
Retailer 4
-
£1,455 GBP
$1,949 USD
View
Price last confirmed 19 days ago
B+
Retailer 5
-
£1,455 GBP
$1,949 USD
View
B+
Retailer 6
-
£1,555 GBP
$2,083 USD
View
B+
Retailer 7
-
£1,582 GBP
$2,120 USD
View
B
Retailer 8
-
£1,681 GBP
HK$17,600 HKD
View
B+
Retailer 9
-
£1,997 GBP
View
B+
Retailer 10
-
£2,037 GBP
View
B
Retailer 11
-
£2,081 GBP
$2,788 USD
View
B
Retailer 12
-
£2,253 GBP
€2,875 EUR
View
B
Retailer 13
-
£2,287 GBP
$3,064 USD
View
B
Retailer 14
-
£2,674 GBP
ZAR 57,886 ZAR
View
B
Retailer 15
-
£2,726 GBP
$3,653 USD
View
B
Retailer 16
-
£3,814 GBP
$5,110 USD
View
Retailer 17
-
£3,920 GBP
$5,253 USD
View
Price under review
Retailer 18
-
£4,177 GBP
View
Price under review
Retailer 19
-
£4,416 GBP
$5,917 USD
View
Price under review
Retailer 20
-
£4,862 GBP
SGD 8,803 SGD
View
Price under review
Retailer 21
-
£5,105 GBP
$6,840 USD
View
Price under review
Most Expensive
With Clarity
786634063 · Oct 31
£5,309 GBP
$7,114 USD
View
Price under review
21 more retailers have this diamond
Prices start from £1,254 GBPSave up to £2,560 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.

B+
1.51ct Round
£1,254 GBP