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Round|Lab Grown|IGI

1.50ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG450028066

Shape and cutting style on the report: Round brilliant

Certificate IGI LG450028066

Diamond specifications and retailer prices

From $1,476 NZD
As of November 5, 2026
Save $7,547 NZD (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,023 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG450028066 or 450028066. Listed at 12 retailers as of November 5, 2026, with prices from $1,476 to $9,023, a $7,547 spread on the same certified stone. MOH London lists it at $9,023. 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

1.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG450028066
Dimensions7.49 × 7.47 × 4.34 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD). Type IIa
Top View
7.49 mm7.47 mm1.50 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG450028066
Side View
Table 62.0%Crown 32°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 57.9%

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 5
Current: $9,023 NZD|Low: $1,476 NZD|High: $9,170 NZD|Avg: $4,560 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 4$1,476 NZD
Retailer 5$2,428 NZD
Retailer 8$2,716 NZD
Retailer 6$2,816 NZD
Retailer 9$3,122 NZD
Retailer 10$3,855 NZD
Retailer 7$4,451 NZD
Retailer 2$5,065 NZD
Retailer 11$5,250 NZD
Retailer 3$8,060 NZD
MOH London$9,023 NZD

40 data points across 11 retailers

12 retailers$1,476 NZD to $9,023 NZD

A
Cheapest Retailer
-
$1,476 NZD
B+
Retailer 2
-
$2,428 NZD
View
B+
Retailer 3
-
$2,642 NZD
View
B+
Retailer 4
-
$2,716 NZD
View
Final sale: no returns
Retailer 5
-
$2,816 NZD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$2,816 NZD
View
B
Retailer 7
-
$3,122 NZD
View
B
Retailer 8
-
$4,451 NZD
View
B
Retailer 9
-
$5,065 NZD
View
B
Retailer 10
-
$5,250 NZD
View
B
Retailer 11
-
$5,278 NZD
View
Most Expensive
B
MOH London
LG450028066 · Nov 5
$9,023 NZD
£3,994 GBP
View
11 more retailers have this diamond
Prices start from $1,476 NZDSave up to $7,547 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
1.50ct Round
$1,476 NZD