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Round|Lab Grown|IGI

1.50ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG447099890

Shape and cutting style on the report: Round brilliant

Certificate IGI LG447099890

Diamond specifications and retailer prices

From $1,661 NZD
As of November 5, 2026
Save $4,856 NZD (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,518 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447099890 or 447099890. Listed at 9 retailers as of November 5, 2026, with prices from $1,661 to $6,518, a $4,856 spread on the same certified stone. MOH London lists it at $6,518. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447099890
Dimensions7.50 × 7.53 × 4.40 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.50 mm7.53 mm1.50 ctK / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447099890
Side View
Table 57.0%Crown 31.5°Girdle: THN-MEDPavilion 40.2°Culet: NoneDepth 58.6%

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: $6,518 NZD|Low: $1,596 NZD|High: $6,624 NZD|Avg: $3,281 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 4$1,661 NZD
Retailer 5$1,927 NZD
Retailer 7$1,927 NZD
Retailer 2$2,241 NZD
Retailer 8$2,839 NZD
Retailer 6$3,086 NZD
Retailer 3$4,287 NZD
MOH London$6,518 NZD

20 data points across 8 retailers

9 retailers$1,661 NZD to $6,518 NZD

A
Cheapest Retailer
-
$1,661 NZD
A
Retailer 2
-
$1,807 NZD
View
Retailer 3
-
$1,927 NZD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
$1,927 NZD
View
B+
Retailer 5
-
$2,241 NZD
View
B
Retailer 6
-
$3,086 NZD
View
B
Retailer 7
-
$4,287 NZD
View
B
Retailer 8
-
$5,419 NZD
View
Most Expensive
B
MOH London
LG447099890 · Nov 5
$6,518 NZD
£2,885 GBP
View
8 more retailers have this diamond
Prices start from $1,661 NZDSave up to $4,856 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
$1,661 NZD