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Round|Lab Grown|IGI

1.15ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG445039317

Shape and cutting style on the report: Round brilliant

Certificate IGI LG445039317

Diamond specifications and retailer prices

From €588 EUR
As of November 5, 2026
Save €3,150 EUR (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €3,738 EUR at MOH London · As of November 5, 2026
View at MOH London

About this 1.15ct lab-grown round diamond

This 1.15ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG445039317 or 445039317. Listed at 13 retailers as of November 5, 2026, with prices from €588 to €3,738, a €3,150 spread on the same certified stone. MOH London lists it at €3,738. 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

1.15
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.4°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445039317
Dimensions6.77 × 6.78 × 4.10 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.77 mm6.78 mm1.15 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG445039317
Side View
Table 59.5%Crown 31.4°Girdle: MED-STKPavilion 41.4°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 5
Current: €3,738 EUR|Low: €588 EUR|High: €3,800 EUR|Avg: €1,563 EUR|-0.3%
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
November 6, 2026
Retailer 8€588 EUR
Retailer 9€953 EUR
Retailer 14€1,037 EUR
Retailer 13€1,067 EUR
Retailer 10€1,106 EUR
Retailer 12€1,106 EUR
Retailer 4€1,261 EUR
Retailer 2€1,269 EUR
Retailer 5€1,579 EUR
Retailer 11€1,761 EUR
Retailer 7€1,880 EUR
Retailer 3€2,072 EUR
Retailer 6€2,243 EUR
MOH London€3,738 EUR

43 data points across 14 retailers

13 retailers€588 EUR to €3,738 EUR

A
Cheapest Retailer
-
€588 EUR
B+
Retailer 2
-
€953 EUR
View
B+
Retailer 3
-
€1,037 EUR
View
B+
Retailer 4
-
€1,067 EUR
View
Final sale: no returns
Retailer 5
-
€1,106 EUR
View
Price last confirmed 25 days ago
B+
Retailer 6
-
€1,106 EUR
View
B+
Retailer 7
-
€1,261 EUR
View
B+
Retailer 8
-
€1,269 EUR
View
B
Retailer 9
-
€1,761 EUR
View
B
Retailer 10
-
€1,880 EUR
View
B
Retailer 11
-
€2,072 EUR
View
B
Retailer 12
-
€2,243 EUR
View
Most Expensive
B
MOH London
LG445039317 · Nov 5
€3,738 EUR
£3,304 GBP
View
12 more retailers have this diamond
Prices start from €588 EURSave up to €3,150 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
1.15ct Round
€588 EUR