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Round|Lab Grown|IGI

2.91ct K SI1 Round Lab Grown Diamond

ID • K/SI1 • IGI LG485161730

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485161730

Diamond specifications and retailer prices

From $2,531 USD
As of November 5, 2026
Save $5,310 USD (68%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,841 USD at MOH London · As of November 5, 2026
View at MOH London

About this 2.91ct lab-grown round diamond

This 2.91ct lab-grown round sits in the two to three carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG485161730 or 485161730. Listed at 10 retailers as of November 5, 2026, with prices from $2,531 to $7,841, a $5,310 spread on the same certified stone. MOH London lists it at $7,841. 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
K
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485161730
Dimensions9.09 × 9.13 × 5.58 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.09 mm9.13 mm2.91 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485161730
Side View
Table 59.0%Crown 36.1°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 61.2%

Caratlytics Score

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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: Nov 5
Current: $7,841 USD|Low: $2,430 USD|High: $7,968 USD|Avg: $4,013 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5$2,531 USD
Retailer 2$2,847 USD
Retailer 6$2,936 USD
Retailer 8$2,936 USD
Retailer 3$2,940 USD
Retailer 9$3,608 USD
Retailer 4$4,309 USD
Retailer 7$4,575 USD
MOH London$7,841 USD

39 data points across 9 retailers

10 retailers$2,531 USD to $7,841 USD

A
Cheapest Retailer
-
$2,531 USD
A
Retailer 2
-
$2,754 USD
View
A
Retailer 3
-
$2,847 USD
View
Retailer 4
-
$2,936 USD
View
Price last confirmed 25 days ago
A
Retailer 5
-
$2,936 USD
View
A
Retailer 6
-
$2,940 USD
View
B
Retailer 7
-
$4,036 USD
View
B
Retailer 8
-
$4,309 USD
View
B
Retailer 9
-
$4,575 USD
View
Most Expensive
B
MOH London
LG485161730 · Nov 5
$7,841 USD
£6,174 GBP
View
9 more retailers have this diamond
Prices start from $2,531 USDSave up to $5,310 USD

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
2.91ct Round
$2,531 USD