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Round|Lab Grown|IGI

1.51ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG442066850

Shape and cutting style on the report: Round brilliant

Certificate IGI LG442066850

Diamond specifications and retailer prices

From €748 EUR
As of November 5, 2026
Save €3,800 EUR (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €4,549 EUR at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG442066850 or 442066850. Listed at 12 retailers as of November 5, 2026, with prices from €748 to €4,549, a €3,800 spread on the same certified stone. MOH London lists it at €4,549. 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

1.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442066850
Dimensions7.28 × 7.26 × 4.58 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
7.28 mm7.26 mm1.51 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442066850
Side View
Table 55.5%Crown 36.2°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.9%

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: €4,549 EUR|Low: €748 EUR|High: €4,617 EUR|Avg: €1,968 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 7€748 EUR
Retailer 8€1,224 EUR
Retailer 12€1,331 EUR
Retailer 11€1,370 EUR
Retailer 9€1,419 EUR
Retailer 14€1,419 EUR
Retailer 3€1,573 EUR
Retailer 6€1,644 EUR
Retailer 5€1,942 EUR
Retailer 10€2,243 EUR
Retailer 2€2,553 EUR
Retailer 4€2,646 EUR
Retailer 13€2,661 EUR
MOH London€4,549 EUR

40 data points across 14 retailers

12 retailers€748 EUR to €4,549 EUR

A
Cheapest Retailer
-
€748 EUR
B+
Retailer 2
-
€1,224 EUR
View
B+
Retailer 3
-
€1,331 EUR
View
B+
Retailer 4
-
€1,370 EUR
View
Final sale: no returns
B+
Retailer 5
-
€1,419 EUR
View
Retailer 6
-
€1,419 EUR
View
Price last confirmed 25 days ago
B+
Retailer 7
-
€1,573 EUR
View
B
Retailer 8
-
€2,243 EUR
View
B
Retailer 9
-
€2,553 EUR
View
B
Retailer 10
-
€2,646 EUR
View
B
Retailer 11
-
€2,661 EUR
View
Most Expensive
B
MOH London
LG442066850 · Nov 5
€4,549 EUR
£4,020 GBP
View
11 more retailers have this diamond
Prices start from €748 EURSave up to €3,800 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
1.51ct Round
€748 EUR