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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 €591 EUR
$660 USD
As of October 30, 2026
Save €3,196 EUR (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €3,787 EUR at MOH London · As of October 29, 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 October 29, 2026, with prices from €591 to €3,787, a €3,196 spread on the same certified stone. MOH London lists it at €3,787. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €3,787 EUR|Low: €591 EUR|High: €3,817 EUR|Avg: €1,572 EUR|+0.5%
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 7€591 EUR
Retailer 9€958 EUR
Retailer 14€1,042 EUR
Retailer 13€1,072 EUR
Retailer 10€1,111 EUR
Retailer 12€1,111 EUR
Retailer 4€1,267 EUR
Retailer 8€1,286 EUR
Retailer 5€1,586 EUR
Retailer 11€1,770 EUR
Retailer 2€1,891 EUR
Retailer 3€2,082 EUR
Retailer 6€2,253 EUR
MOH London€3,787 EUR

38 data points across 14 retailers

13 retailers€591 EUR to €3,787 EUR

A
Cheapest Retailer
-
€591 EUR
$660 USD
B+
Retailer 2
-
€958 EUR
$1,070 USD
View
B+
Retailer 3
-
€1,042 EUR
$1,164 USD
View
B+
Retailer 4
-
€1,072 EUR
$1,198 USD
View
Final sale: no returns
Retailer 5
-
€1,111 EUR
$1,241 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
€1,111 EUR
$1,241 USD
View
B+
Retailer 7
-
€1,267 EUR
$1,415 USD
View
B+
Retailer 8
-
€1,286 EUR
£1,131 GBP
View
B
Retailer 9
-
€1,770 EUR
$1,977 USD
View
B
Retailer 10
-
€1,891 EUR
View
B
Retailer 11
-
€2,082 EUR
$2,326 USD
View
B
Retailer 12
-
€2,253 EUR
$2,517 USD
View
Most Expensive
B
MOH London
LG445039317 · Oct 29
€3,787 EUR
£3,331 GBP
View
12 more retailers have this diamond
Prices start from €591 EURSave up to €3,196 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
€591 EUR