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Oval|Lab Grown|IGI

0.51ct F SI1 Oval Lab Grown Diamond

EX • F/SI1 • IGI LG407936479

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG407936479

Diamond specifications and retailer prices

From £216 GBP
$290 USD
As of October 31, 2026
Save £1,030 GBP (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,246 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.51ct lab-grown oval diamond

This 0.51ct lab-grown oval sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG407936479 or 407936479. Listed at 12 retailers as of October 31, 2026, with prices from £216 to £1,246, a £1,030 spread on the same certified stone. MOH London lists it at £1,246. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle36.2°
Pavilion angle41.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407936479
Dimensions6.09 × 4.53 × 2.84 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT) Type II
Top View
6.09 mm4.53 mm0.51 ctF / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG407936479
Side View
Table 61.5%Crown 36.2°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.7%

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: Oct 31
Current: £1,246 GBP|Low: £216 GBP|High: £1,262 GBP|Avg: £569 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 4£216 GBP
Retailer 7£251 GBP
Retailer 10£280 GBP
Retailer 8£311 GBP
Retailer 11£311 GBP
Retailer 9£502 GBP
Retailer 2£553 GBP
Retailer 5£560 GBP
Retailer 6£912 GBP
Retailer 3£1,136 GBP
MOH London£1,246 GBP

42 data points across 11 retailers

12 retailers£216 GBP to £1,246 GBP

A
Cheapest Retailer
-
£216 GBP
$290 USD
B+
Retailer 2
-
£251 GBP
$336 USD
View
B+
Retailer 3
-
£280 GBP
$375 USD
View
Final sale: no returns
B+
Retailer 4
-
£291 GBP
$390 USD
View
B+
Retailer 5
-
£311 GBP
$417 USD
View
Retailer 6
-
£311 GBP
$417 USD
View
Price last confirmed 8 days ago
B
Retailer 7
-
£502 GBP
$673 USD
View
B
Retailer 8
-
£553 GBP
View
B
Retailer 9
-
£912 GBP
$1,222 USD
View
B
Retailer 10
-
£1,000 GBP
$1,340 USD
View
B
Retailer 11
-
£1,136 GBP
$1,523 USD
View
Most Expensive
B
MOH London
LG407936479 · Nov 1
£1,246 GBP
View
11 more retailers have this diamond
Prices start from £216 GBPSave up to £1,030 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
0.51ct Oval
£216 GBP