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Round|Lab Grown|IGI

0.51ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG502108737

Shape and cutting style on the report: Round brilliant

Certificate IGI LG502108737

Diamond specifications and retailer prices

From €245 EUR
$274 USD
As of November 1, 2026
Save €982 EUR (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €1,228 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG502108737 or 502108737. Listed at 11 retailers as of October 29, 2026, with prices from €245 to €1,228, a €982 spread on the same certified stone. MOH London lists it at €1,228. 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
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.9°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG502108737
Dimensions5.19 × 5.17 × 3.14 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
5.19 mm5.17 mm0.51 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG502108737
Side View
Table 55.5%Crown 31.9°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.5%

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: €1,228 EUR|Low: €197 EUR|High: €1,236 EUR|Avg: €497 EUR|-0.6%
MOH London
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
October 31, 2026
Retailer 8€245 EUR
Retailer 6€257 EUR
Retailer 13€275 EUR
Retailer 3€285 EUR
Retailer 9€286 EUR
Retailer 10€304 EUR
Retailer 12€304 EUR
Retailer 4€448 EUR
Retailer 11€505 EUR
Retailer 2€569 EUR
Retailer 5€620 EUR
Retailer 7€935 EUR
Retailer 14€979 EUR
MOH London€1,228 EUR

20 data points across 14 retailers

11 retailers€245 EUR to €1,228 EUR

A
Cheapest Retailer
-
€245 EUR
$274 USD
A
Retailer 2
-
€275 EUR
$307 USD
View
Final sale: no returns
A
Retailer 3
-
€285 EUR
$318 USD
View
A
Retailer 4
-
€286 EUR
$320 USD
View
Retailer 5
-
€304 EUR
$340 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
€304 EUR
$340 USD
View
B+
Retailer 7
-
€505 EUR
$564 USD
View
B+
Retailer 8
-
€569 EUR
View
B
Retailer 9
-
€935 EUR
$1,045 USD
View
B
Retailer 10
-
€979 EUR
$1,094 USD
View
Most Expensive
B
MOH London
LG502108737 · Oct 29
€1,228 EUR
£1,080 GBP
View
10 more retailers have this diamond
Prices start from €245 EURSave up to €982 EUR

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 Round
€245 EUR