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Round|Lab Grown|IGI

5.15ct F SI2 Round Lab Grown Diamond

EX • F/SI2 • IGI LG512235621

Shape and cutting style on the report: Round brilliant

Certificate IGI LG512235621

Diamond specifications and retailer prices

From $637 USD
As of November 1, 2026
Save $2,495 USD (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,132 USD at MOH London · As of October 29, 2026
View at MOH London

About this 5.15ct lab-grown round diamond

This 5.15ct lab-grown round sits in the over five carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512235621 or 512235621. Listed at 13 retailers as of October 29, 2026, with prices from $637 to $3,132, a $2,495 spread on the same certified stone. MOH London lists it at $3,132. 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

5.15
Carat
F
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512235621
Dimensions11.08 × 11.12 × 6.89 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.08 mm11.12 mm5.15 ctF / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512235621
Side View
Table 55.5%Crown 32.5°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
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 1
Current: $3,132 USD|Low: $637 USD|High: $29,387 USD|Avg: $2,009 USD|-2.9%
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
November 1, 2026
Retailer 9$637 USD
Retailer 2$660 USD
Retailer 7$694 USD
Retailer 13$713 USD
Retailer 11$739 USD
Retailer 5$1,095 USD
Retailer 10$1,130 USD
Retailer 6$1,177 USD
Retailer 12$1,772 USD
Retailer 8$1,889 USD
Retailer 4$2,079 USD
Retailer 3$3,000 USD
MOH London$3,132 USD

13 data points across 13 retailers

13 retailers$637 USD to $3,132 USD

A
Cheapest Retailer
-
$637 USD
A
Retailer 2
-
$660 USD
£520 GBP
View
A
Retailer 3
-
$694 USD
View
A
Retailer 4
-
$713 USD
View
Final sale: no returns
A
Retailer 5
-
$739 USD
View
B+
Retailer 6
-
$1,095 USD
View
B+
Retailer 7
-
$1,130 USD
View
B+
Retailer 8
-
$1,177 USD
£927 GBP
View
B
Retailer 9
-
$1,772 USD
View
B
Retailer 10
-
$1,889 USD
View
B
Retailer 11
-
$2,079 USD
View
B
Retailer 12
-
$3,000 USD
View
Most Expensive
B
MOH London
LG512235621 · Oct 29
$3,132 USD
£2,466 GBP
View
12 more retailers have this diamond
Prices start from $637 USDSave up to $2,495 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
5.15ct Round
$637 USD