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1.56ct K SI1 Round Lab Grown Diamond

ID • K/SI1 • IGI LG497155948

Shape and cutting style on the report: Round brilliant

Certificate IGI LG497155948

Diamond specifications and retailer prices

From $1,726 NZD
As of November 5, 2026
Save $5,045 NZD (75%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,771 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1.56ct lab-grown round diamond

This 1.56ct 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 LG497155948 or 497155948. Listed at 10 retailers as of November 5, 2026, with prices from $1,726 to $6,771, a $5,045 spread on the same certified stone. MOH London lists it at $6,771. 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

1.56
Carat
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497155948
Dimensions7.40 × 7.46 × 4.55 mm
L/W Ratio1.01
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
7.40 mm7.46 mm1.56 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497155948
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.3%

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: $6,771 NZD|Low: $1,656 NZD|High: $6,882 NZD|Avg: $3,269 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$1,726 NZD
Retailer 6$2,001 NZD
Retailer 8$2,001 NZD
Retailer 2$2,190 NZD
Retailer 3$2,313 NZD
Retailer 9$2,933 NZD
Retailer 7$3,200 NZD
Retailer 4$4,314 NZD
MOH London$6,771 NZD

41 data points across 9 retailers

10 retailers$1,726 NZD to $6,771 NZD

A
Cheapest Retailer
-
$1,726 NZD
A
Retailer 2
-
$1,879 NZD
View
A
Retailer 3
-
$2,001 NZD
View
Retailer 4
-
$2,001 NZD
View
Price last confirmed 25 days ago
A
Retailer 5
-
$2,190 NZD
View
B+
Retailer 6
-
$2,313 NZD
View
B+
Retailer 7
-
$3,200 NZD
View
B
Retailer 8
-
$3,752 NZD
View
B
Retailer 9
-
$4,314 NZD
View
Most Expensive
B
MOH London
LG497155948 · Nov 5
$6,771 NZD
£2,997 GBP
View
9 more retailers have this diamond
Prices start from $1,726 NZDSave up to $5,045 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
1.56ct Round
$1,726 NZD