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Round|Lab Grown|IGI

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 $335 AUD
As of November 6, 2026
Save $654 AUD (66%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $989 AUD 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 $335 to $989, a $654 spread on the same certified stone. Taylor and Hart lists it at $989. 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: $595 AUD|Low: $335 AUD|High: $989 AUD|Avg: $604 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Taylor and Hart
November 6, 2026
Retailer 2$335 AUD
Retailer 5$381 AUD
Retailer 6$489 AUD
Retailer 3$492 AUD
Retailer 1$595 AUD
Retailer 4$947 AUD
Taylor and Hart$989 AUD

1 data point across 7 retailers

7 retailers$335 AUD to $989 AUD

A
Cheapest Retailer
-
$335 AUD
B+
Retailer 2
-
$381 AUD
View
A
Retailer 3
-
$489 AUD
View
A
Retailer 4
-
$492 AUD
View
A
Retailer 5
-
$595 AUD
View
B+
Retailer 6
-
$947 AUD
View
Most Expensive
B+
Taylor and Hart
4387DGU · Nov 6
$989 AUD
$679 USD
View
6 more retailers have this diamond
Prices start from $335 AUDSave up to $654 AUD

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
$335 AUD