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Round|Lab Grown|IGI

1.03ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG839672512

Shape and cutting style on the report: Round brilliant

Certificate IGI LG839672512

Diamond specifications and retailer prices

From €124 EUR
$139 USD
As of October 29, 2026
Save €599 EUR (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €723 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1.03ct lab-grown round diamond

This 1.03ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG839672512 or 839672512. Listed at 14 retailers as of October 29, 2026, with prices from €124 to €723, a €599 spread on the same certified stone. MOH London lists it at €723. 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

1.03
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839672512
Dimensions6.44 × 6.48 × 4.00 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.44 mm6.48 mm1.03 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839672512
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.9%

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: Oct 29
Current: €723 EUR|Low: €124 EUR|High: €728 EUR|Avg: €331 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 30, 2026
Retailer 12€124 EUR
Retailer 4€144 EUR
Retailer 11€154 EUR
Retailer 14€154 EUR
Retailer 7€261 EUR
Retailer 8€274 EUR
Retailer 10€277 EUR
Retailer 6€288 EUR
Retailer 2€343 EUR
Retailer 9€389 EUR
Retailer 13€425 EUR
Retailer 5€441 EUR
Retailer 3€494 EUR
MOH London€723 EUR

25 data points across 14 retailers

14 retailers€124 EUR to €723 EUR

A
Cheapest Retailer
-
€124 EUR
$139 USD
A
Retailer 2
-
€144 EUR
$161 USD
View
A
Retailer 3
-
€154 EUR
$172 USD
View
Retailer 4
-
€154 EUR
$172 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
€261 EUR
£230 GBP
View
A
Retailer 6
-
€274 EUR
View
A
Retailer 7
-
€277 EUR
$309 USD
View
B+
Retailer 8
-
€288 EUR
$322 USD
View
B+
Retailer 9
-
€343 EUR
£302 GBP
View
B+
Retailer 10
-
€389 EUR
$435 USD
View
B
Retailer 11
-
€425 EUR
SGD 641 SGD
View
B+
Retailer 12
-
€441 EUR
$493 USD
View
B
Retailer 13
-
€494 EUR
$552 USD
View
Most Expensive
B
MOH London
LG839672512 · Oct 29
€723 EUR
£636 GBP
View
13 more retailers have this diamond
Prices start from €124 EURSave up to €599 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
1.03ct Round
€124 EUR