CaratHunter
Plans
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 $1,130 NZD
$637 USD
As of November 1, 2026
Save $4,427 NZD (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,557 NZD 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 $1,130 to $5,557, a $4,427 spread on the same certified stone. MOH London lists it at $5,557. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $5,557 NZD|Low: $1,130 NZD|High: $52,141 NZD|Avg: $3,565 NZD|-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$1,130 NZD
Retailer 2$1,171 NZD
Retailer 7$1,231 NZD
Retailer 13$1,265 NZD
Retailer 11$1,311 NZD
Retailer 5$1,943 NZD
Retailer 10$2,005 NZD
Retailer 6$2,088 NZD
Retailer 12$3,144 NZD
Retailer 8$3,352 NZD
Retailer 4$3,689 NZD
Retailer 3$5,323 NZD
MOH London$5,557 NZD

13 data points across 13 retailers

13 retailers$1,130 NZD to $5,557 NZD

A
Cheapest Retailer
-
$1,130 NZD
$637 USD
A
Retailer 2
-
$1,171 NZD
£520 GBP
View
A
Retailer 3
-
$1,231 NZD
$694 USD
View
A
Retailer 4
-
$1,265 NZD
$713 USD
View
Final sale: no returns
A
Retailer 5
-
$1,311 NZD
$739 USD
View
B+
Retailer 6
-
$1,943 NZD
$1,095 USD
View
B+
Retailer 7
-
$2,005 NZD
$1,130 USD
View
B+
Retailer 8
-
$2,088 NZD
£927 GBP
View
B
Retailer 9
-
$3,144 NZD
$1,772 USD
View
B
Retailer 10
-
$3,352 NZD
$1,889 USD
View
B
Retailer 11
-
$3,689 NZD
$2,079 USD
View
B
Retailer 12
-
$5,323 NZD
$3,000 USD
View
Most Expensive
B
MOH London
LG512235621 · Oct 29
$5,557 NZD
£2,466 GBP
View
12 more retailers have this diamond
Prices start from $1,130 NZDSave up to $4,427 NZD

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
$1,130 NZD