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Round|Lab Grown|IGI

1.05ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG780664743

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780664743

Diamond specifications and retailer prices

From $258 NZD
As of November 5, 2026
Save $1,238 NZD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,496 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1.05ct lab-grown round diamond

This 1.05ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG780664743 or 780664743. Listed at 11 retailers as of November 4, 2026, with prices from $258 to $1,496, a $1,238 spread on the same certified stone. MOH London lists it at $1,496. 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

1.05
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780664743
Dimensions6.56 × 6.51 × 4.00 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.56 mm6.51 mm1.05 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780664743
Side View
Table 58.0%Crown 33.9°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
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: $1,496 NZD|Low: $217 NZD|High: $1,848 NZD|Avg: $925 NZD|-2.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 4, 2026
Retailer 2$258 NZD
Retailer 11$295 NZD
Retailer 13$544 NZD
Retailer 10$592 NZD
Retailer 6$626 NZD
Retailer 4$726 NZD
Retailer 8$758 NZD
Retailer 9$1,032 NZD
Retailer 7$1,090 NZD
Retailer 3$1,130 NZD
MOH London$1,496 NZD
Retailer 12$1,565 NZD
Retailer 5$1,848 NZD

20 data points across 13 retailers

11 retailers$258 NZD to $1,496 NZD

A
Cheapest Retailer
-
$258 NZD
Retailer 2
-
$263 NZD
View
Price last confirmed 45 days ago
A
Retailer 3
-
$295 NZD
View
Final sale: no returns
Retailer 4
-
$306 NZD
View
Price last confirmed 45 days ago
A
Retailer 5
-
$592 NZD
View
Retailer 6
-
$626 NZD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
$758 NZD
View
B
Retailer 8
-
$1,032 NZD
View
Retailer 9
-
$1,053 NZD
View
Price last confirmed 41 days ago
B
Retailer 10
-
$1,090 NZD
View
Most Expensive
B
MOH London
LG780664743 · Nov 4
$1,496 NZD
£662 GBP
View
10 more retailers have this diamond
Prices start from $258 NZDSave up to $1,238 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
1.05ct Round
$258 NZD