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1.51ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • IGI LG512205224

Shape and cutting style on the report: Round brilliant

Certificate IGI LG512205224

Diamond specifications and retailer prices

From $1,526 NZD
$860 USD
As of October 31, 2026
Save $7,249 NZD (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,775 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512205224 or 512205224. Listed at 9 retailers as of October 31, 2026, with prices from $1,526 to $8,775, a $7,249 spread on the same certified stone. MOH London lists it at $8,775. 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

1.51
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512205224
Dimensions7.44 × 7.47 × 4.42 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
7.44 mm7.47 mm1.51 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512205224
Side View
Table 59.0%Crown 32.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 59.2%

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: Oct 31
Current: $8,775 NZD|Low: $1,526 NZD|High: $8,880 NZD|Avg: $4,228 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$1,526 NZD
Retailer 3$2,354 NZD
Retailer 6$2,562 NZD
Retailer 4$2,731 NZD
Retailer 9$3,754 NZD
Retailer 5$4,320 NZD
Retailer 8$5,090 NZD
Retailer 7$5,119 NZD
Retailer 10$6,114 NZD
MOH London$8,775 NZD

14 data points across 10 retailers

9 retailers$1,526 NZD to $8,775 NZD

A
Cheapest Retailer
-
$1,526 NZD
$860 USD
B+
Retailer 2
-
$2,354 NZD
$1,327 USD
View
B+
Retailer 3
-
$2,562 NZD
$1,444 USD
View
B+
Retailer 4
-
$2,731 NZD
$1,539 USD
View
Retailer 5
-
$2,731 NZD
$1,539 USD
View
Price last confirmed 20 days ago
B
Retailer 6
-
$4,320 NZD
$2,435 USD
View
B
Retailer 7
-
$5,090 NZD
$2,869 USD
View
B
Retailer 8
-
$5,119 NZD
$2,885 USD
View
Most Expensive
B
MOH London
LG512205224 · Nov 1
$8,775 NZD
£3,894 GBP
View
8 more retailers have this diamond
Prices start from $1,526 NZDSave up to $7,249 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
1.51ct Round
$1,526 NZD