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1.29ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG854634719

Shape and cutting style on the report: Round brilliant

Certificate IGI LG854634719

Diamond specifications and retailer prices

From $415 NZD
As of November 6, 2026
Save $810 NZD (66%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,225 NZD at Taylor and Hart · As of November 6, 2026
View at Taylor and Hart

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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG854634719 or 854634719. Listed at 7 retailers as of November 6, 2026, with prices from $415 to $1,225, a $810 spread on the same certified stone. Taylor and Hart lists it at $1,225. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG854634719
Dimensions6.91 × 6.93 × 4.28 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.91 mm6.93 mm1.29 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG854634719
Side View
Table 58.0%Crown 36.1°Girdle: MediumPavilion 40.4°Culet: NoneDepth 61.8%

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 6
Current: $738 NZD|Low: $415 NZD|High: $1,225 NZD|Avg: $749 NZD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Taylor and Hart
November 6, 2026
Retailer 2$415 NZD
Retailer 5$473 NZD
Retailer 6$606 NZD
Retailer 3$610 NZD
Retailer 1$738 NZD
Retailer 4$1,174 NZD
Taylor and Hart$1,225 NZD

1 data point across 7 retailers

7 retailers$415 NZD to $1,225 NZD

A
Cheapest Retailer
-
$415 NZD
B+
Retailer 2
-
$473 NZD
View
A
Retailer 3
-
$606 NZD
View
A
Retailer 4
-
$610 NZD
View
A
Retailer 5
-
$738 NZD
View
B+
Retailer 6
-
$1,174 NZD
View
Most Expensive
B+
Taylor and Hart
4387DGU · Nov 6
$1,225 NZD
$679 USD
View
6 more retailers have this diamond
Prices start from $415 NZDSave up to $810 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
$415 NZD