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1.25ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG830622757

Shape and cutting style on the report: Round brilliant

Certificate IGI LG830622757

Diamond specifications and retailer prices

From $719 NZD
As of November 5, 2026
Save $1,199 NZD (63%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,918 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1.25ct lab-grown round diamond

This 1.25ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG830622757 or 830622757. Listed at 6 retailers as of November 5, 2026, with prices from $719 to $1,918, a $1,199 spread on the same certified stone. MOH London lists it at $1,918. 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

1.25
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830622757
Dimensions6.86 × 6.88 × 4.29 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
6.86 mm6.88 mm1.25 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830622757
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.5%

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: $1,918 NZD|Low: $674 NZD|High: $2,051 NZD|Avg: $938 NZD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4$690 NZD
Retailer 6$719 NZD
Retailer 3$722 NZD
Retailer 2$736 NZD
Retailer 5$872 NZD
MOH London$1,918 NZD

43 data points across 6 retailers

6 retailers$719 NZD to $1,918 NZD

Retailer 1
-
$690 NZD
Price last confirmed 8 days ago
A
Retailer 2
-
$719 NZD
View
A
Retailer 3
-
$722 NZD
View
A
Retailer 4
-
$736 NZD
View
B+
Retailer 5
-
$872 NZD
View
Most Expensive
B
MOH London
LG830622757 · Nov 5
$1,918 NZD
£849 GBP
View
5 more retailers have this diamond
Prices start from $719 NZDSave up to $1,199 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
1.25ct Round
$719 NZD