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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 HK$9,111 HKD
CA$1,613 CAD
As of October 30, 2026
Save HK$2,940 HKD (24%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: HK$15,131 HKD 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: HK$15,131 HKD|Low: HK$1,820 HKD|High: HK$19,065 HKD|Avg: HK$8,020 HKD
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 9HK$2,283 HKD
Retailer 2HK$2,542 HKD
Retailer 10HK$2,832 HKD
Retailer 16HK$2,864 HKD
Retailer 13HK$4,241 HKD
Retailer 14HK$4,456 HKD
Retailer 11HK$4,748 HKD
Retailer 12HK$5,131 HKD
Retailer 15HK$7,524 HKD
Retailer 3HK$8,003 HKD
Retailer 5HK$8,050 HKD
Retailer 7HK$9,111 HKD
Retailer 4HK$12,051 HKD
Rare CaratHK$15,131 HKD
Retailer 6HK$19,065 HKD
Retailer 8HK$19,065 HKD

4 data points across 16 retailers

4 retailersHK$9,111 HKD to HK$12,051 HKD

Retailer 1
-
HK$2,283 HKD
$291 USD
Price last confirmed 43 days ago
B+
Retailer 2
-
HK$9,111 HKD
CA$1,613 CAD
View
B+
Retailer 3
-
HK$12,051 HKD
$1,536 USD
View
Most Expensive
Rare Carat
100753388190_l_645406507 · Sep 9
HK$15,131 HKD
$1,929 USD
View
Price last confirmed 52 days ago
3 more retailers have this diamond
Prices start from HK$9,111 HKDSave up to HK$2,940 HKD

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
HK$9,111 HKD