CaratHunter
Plans
Round|Lab Grown|IGI

1.03ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG451056228

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451056228

Diamond specifications and retailer prices

From €537 EUR
$600 USD
As of October 30, 2026
Save €3,312 EUR (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €3,849 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451056228 or 451056228. Listed at 12 retailers as of October 29, 2026, with prices from €537 to €3,849, a €3,312 spread on the same certified stone. MOH London lists it at €3,849. 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
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056228
Dimensions6.44 × 6.41 × 4.08 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
6.44 mm6.41 mm1.03 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056228
Side View
Table 55.5%Crown 34.1°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.4%

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 30
Current: €3,849 EUR|Low: €537 EUR|High: €3,880 EUR|Avg: €1,809 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
October 31, 2026
Retailer 6€537 EUR
Retailer 7€1,028 EUR
Retailer 11€1,150 EUR
Retailer 8€1,191 EUR
Retailer 10€1,191 EUR
Retailer 5€1,309 EUR
Retailer 12€1,347 EUR
Retailer 13€1,680 EUR
Retailer 9€1,893 EUR
Retailer 2€2,037 EUR
Retailer 3€2,348 EUR
Retailer 4€3,411 EUR
MOH London€3,849 EUR

25 data points across 13 retailers

12 retailers€537 EUR to €3,849 EUR

A
Cheapest Retailer
-
€537 EUR
$600 USD
B+
Retailer 2
-
€1,028 EUR
$1,148 USD
View
B+
Retailer 3
-
€1,117 EUR
$1,248 USD
View
B+
Retailer 4
-
€1,150 EUR
$1,285 USD
View
Final sale: no returns
Retailer 5
-
€1,191 EUR
$1,331 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
€1,191 EUR
$1,331 USD
View
B
Retailer 7
-
€1,347 EUR
$1,505 USD
View
B
Retailer 8
-
€1,893 EUR
$2,115 USD
View
B
Retailer 9
-
€2,037 EUR
View
B
Retailer 10
-
€2,233 EUR
$2,495 USD
View
B
Retailer 11
-
€2,348 EUR
$2,623 USD
View
Most Expensive
B
MOH London
LG451056228 · Oct 29
€3,849 EUR
£3,386 GBP
View
11 more retailers have this diamond
Prices start from €537 EURSave up to €3,312 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
€537 EUR