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Round|Lab Grown|IGI

2.91ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG645406507

Shape and cutting style on the report: Round brilliant

Certificate IGI LG645406507

Diamond specifications and retailer prices

From €1,039 EUR
CA$1,613 CAD
As of October 30, 2026
Save €335 EUR (24%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €1,726 EUR at Rare Carat · As of September 9, 2026
View at Rare Carat

About this 2.91ct lab-grown round diamond

This 2.91ct lab-grown round sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG645406507 or 645406507. Listed at 4 retailers as of October 30, 2026, with a 32% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.91
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645406507
Dimensions9.15 × 9.08 × 5.66 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.15 mm9.08 mm2.91 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645406507
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €1,726 EUR|Low: €208 EUR|High: €2,175 EUR|Avg: €915 EUR
Rare Carat
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
Retailer 15
Retailer 16
October 4, 2026
Retailer 9€260 EUR
Retailer 2€290 EUR
Retailer 10€323 EUR
Retailer 16€327 EUR
Retailer 13€484 EUR
Retailer 14€508 EUR
Retailer 11€542 EUR
Retailer 12€585 EUR
Retailer 15€858 EUR
Retailer 3€913 EUR
Retailer 5€918 EUR
Retailer 7€1,039 EUR
Retailer 4€1,375 EUR
Rare Carat€1,726 EUR
Retailer 6€2,175 EUR
Retailer 8€2,175 EUR

4 data points across 16 retailers

4 retailers€1,039 EUR to €1,375 EUR

Retailer 1
-
€260 EUR
$291 USD
Price last confirmed 43 days ago
B+
Retailer 2
-
€1,039 EUR
CA$1,613 CAD
View
B+
Retailer 3
-
€1,375 EUR
$1,536 USD
View
Most Expensive
Rare Carat
100753388190_l_645406507 · Sep 9
€1,726 EUR
$1,929 USD
View
Price last confirmed 52 days ago
3 more retailers have this diamond
Prices start from €1,039 EURSave up to €335 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.

B+
2.91ct Round
€1,039 EUR