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 €206 EUR
As of November 6, 2026
Save €402 EUR (66%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €608 EUR 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 €206 to €608, a €402 spread on the same certified stone. Taylor and Hart lists it at €608. 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: €366 EUR|Low: €206 EUR|High: €608 EUR|Avg: €372 EUR
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Taylor and Hart
November 6, 2026
Retailer 2€206 EUR
Retailer 5€235 EUR
Retailer 6€301 EUR
Retailer 3€303 EUR
Retailer 1€366 EUR
Retailer 4€583 EUR
Taylor and Hart€608 EUR

1 data point across 7 retailers

7 retailers€206 EUR to €608 EUR

A
Cheapest Retailer
-
€206 EUR
B+
Retailer 2
-
€235 EUR
View
A
Retailer 3
-
€301 EUR
View
A
Retailer 4
-
€303 EUR
View
A
Retailer 5
-
€366 EUR
View
B+
Retailer 6
-
€583 EUR
View
Most Expensive
B+
Taylor and Hart
4387DGU · Nov 6
€608 EUR
$679 USD
View
6 more retailers have this diamond
Prices start from €206 EURSave up to €402 EUR

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
€206 EUR