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Radiant|Lab Grown|IGI

1.28ct F VS1 Radiant Lab Grown Diamond

ID • F/VS1 • IGI LG831640256

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG831640256

Diamond specifications and retailer prices

From $254 AUD
$178 USD
As of November 2, 2026
Save $2,186 AUD (90%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,440 AUD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG831640256 or 831640256. Listed at 14 retailers as of November 2, 2026, with prices from $254 to $2,440, a $2,186 spread on the same certified stone. Do Amore Diamonds lists it at $2,440. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831640256
Dimensions7.75 × 5.32 × 3.53 mm
L/W Ratio1.46
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.75 mm5.32 mm1.28 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831640256
Side View
Table 63.0%Crown 42.8°Girdle: MediumPavilion 34.6°Culet: NoneDepth 66.4%

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 2
Current: $2,440 AUD|Low: $244 AUD|High: $2,440 AUD|Avg: $980 AUD|+7.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 14$254 AUD
Retailer 13$294 AUD
Retailer 15$493 AUD
Retailer 3$542 AUD
Retailer 5$558 AUD
Retailer 2$846 AUD
Retailer 9$913 AUD
Retailer 11$913 AUD
Retailer 10$990 AUD
Retailer 7$1,057 AUD
Retailer 12$1,067 AUD
Retailer 4$1,116 AUD
Retailer 6$1,419 AUD
Retailer 8$1,622 AUD
Do Amore Diamonds$2,440 AUD

27 data points across 15 retailers

14 retailers$254 AUD to $2,440 AUD

A
Cheapest Retailer
-
$254 AUD
$178 USD
A
Retailer 2
-
$294 AUD
$206 USD
View
A
Retailer 3
-
$493 AUD
HK$2,700 HKD
View
A
Retailer 4
-
$542 AUD
$380 USD
View
A
Retailer 5
-
$558 AUD
$391 USD
View
B+
Retailer 6
-
$846 AUD
View
B+
Retailer 7
-
$913 AUD
$640 USD
View
Retailer 8
-
$913 AUD
$640 USD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$990 AUD
View
B
Retailer 10
-
$1,067 AUD
$748 USD
View
B+
Retailer 11
-
$1,116 AUD
$782 USD
View
B
Retailer 12
-
$1,419 AUD
SGD 1,344 SGD
View
B
Retailer 13
-
$1,622 AUD
£895 GBP
View
Most Expensive
B
Do Amore Diamonds
27-B6CB48D66 · Nov 2
$2,440 AUD
$1,710 USD
View
13 more retailers have this diamond
Prices start from $254 AUDSave up to $2,186 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
1.28ct Radiant
$254 AUD