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1.29ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG766644317

Shape and cutting style on the report: Round brilliant

Certificate IGI LG766644317

Diamond specifications and retailer prices

From $662 NZD
As of November 6, 2026
Save $1,143 NZD (63%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,805 NZD at MOH London · As of November 2, 2026
View at MOH London

About this 1.29ct lab-grown round diamond

This 1.29ct 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 LG766644317 or 766644317. Listed at 10 retailers as of November 2, 2026, with prices from $662 to $1,805, a $1,143 spread on the same certified stone. MOH London lists it at $1,805. 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

1.29
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG766644317
Dimensions6.94 × 6.89 × 4.35 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
6.94 mm6.89 mm1.29 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG766644317
Side View
Table 57.0%Crown 36.4°Girdle: THN-STKPavilion 40.8°Culet: NoneDepth 62.9%

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 6
Current: $1,805 NZD|Low: $386 NZD|High: $1,857 NZD|Avg: $897 NZD|-2.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6$386 NZD
Retailer 2$662 NZD
Retailer 8$687 NZD
Retailer 5$688 NZD
Retailer 9$751 NZD
Retailer 7$833 NZD
Retailer 3$863 NZD
Retailer 4$1,014 NZD
Retailer 10$1,103 NZD
MOH London$1,805 NZD

35 data points across 10 retailers

10 retailers$662 NZD to $1,805 NZD

Retailer 1
-
$386 NZD
Price last confirmed 12 days ago
A
Retailer 2
-
$662 NZD
View
B+
Retailer 3
-
$687 NZD
View
A
Retailer 4
-
$688 NZD
View
A
Retailer 5
-
$751 NZD
View
B+
Retailer 6
-
$833 NZD
View
B+
Retailer 7
-
$863 NZD
View
B
Retailer 8
-
$1,014 NZD
View
B
Retailer 9
-
$1,103 NZD
View
Most Expensive
B
MOH London
LG766644317 · Nov 2
$1,805 NZD
£799 GBP
View
9 more retailers have this diamond
Prices start from $662 NZDSave up to $1,143 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
1.29ct Round
$662 NZD