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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 $1,485 SGD
CA$1,613 CAD
As of October 30, 2026
Save $479 SGD (24%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,465 SGD 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,465 SGD|Low: $297 SGD|High: $3,107 SGD|Avg: $1,345 SGD
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$372 SGD
Retailer 2$414 SGD
Retailer 10$462 SGD
Retailer 16$467 SGD
Retailer 13$691 SGD
Retailer 14$726 SGD
Retailer 11$774 SGD
Retailer 12$836 SGD
Retailer 15$1,226 SGD
Retailer 3$1,304 SGD
Retailer 5$1,312 SGD
Retailer 7$1,485 SGD
Retailer 4$1,964 SGD
Rare Carat$2,465 SGD
Retailer 6$3,107 SGD
Retailer 8$3,107 SGD

6 data points across 16 retailers

4 retailers$1,485 SGD to $1,964 SGD

Retailer 1
-
$372 SGD
$291 USD
Price last confirmed 42 days ago
B+
Retailer 2
-
$1,485 SGD
CA$1,613 CAD
View
B+
Retailer 3
-
$1,964 SGD
$1,536 USD
View
Most Expensive
Rare Carat
100753388190_l_645406507 · Sep 9
$2,465 SGD
$1,929 USD
View
Price last confirmed 51 days ago
3 more retailers have this diamond
Prices start from $1,485 SGDSave up to $479 SGD

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
$1,485 SGD