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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 $228 SGD
$178 USD
As of November 2, 2026
Save $1,959 SGD (90%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,186 SGD 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 $228 to $2,186, a $1,959 spread on the same certified stone. Do Amore Diamonds lists it at $2,186. 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

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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 2
Current: $2,186 SGD|Low: $219 SGD|High: $2,186 SGD|Avg: $878 SGD|+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$228 SGD
Retailer 13$263 SGD
Retailer 15$442 SGD
Retailer 3$486 SGD
Retailer 5$500 SGD
Retailer 2$758 SGD
Retailer 9$818 SGD
Retailer 11$818 SGD
Retailer 10$887 SGD
Retailer 7$947 SGD
Retailer 12$956 SGD
Retailer 4$1,000 SGD
Retailer 6$1,271 SGD
Retailer 8$1,453 SGD
Do Amore Diamonds$2,186 SGD

27 data points across 15 retailers

14 retailers$228 SGD to $2,186 SGD

A
Cheapest Retailer
-
$228 SGD
$178 USD
A
Retailer 2
-
$263 SGD
$206 USD
View
A
Retailer 3
-
$442 SGD
HK$2,700 HKD
View
A
Retailer 4
-
$486 SGD
$380 USD
View
A
Retailer 5
-
$500 SGD
$391 USD
View
B+
Retailer 6
-
$758 SGD
A$912 AUD
View
B+
Retailer 7
-
$818 SGD
$640 USD
View
Retailer 8
-
$818 SGD
$640 USD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$887 SGD
A$1,067 AUD
View
B
Retailer 10
-
$956 SGD
$748 USD
View
B+
Retailer 11
-
$1,000 SGD
$782 USD
View
B
Retailer 12
-
$1,271 SGD
View
B
Retailer 13
-
$1,453 SGD
£895 GBP
View
Most Expensive
B
Do Amore Diamonds
27-B6CB48D66 · Nov 2
$2,186 SGD
$1,710 USD
View
13 more retailers have this diamond
Prices start from $228 SGDSave up to $1,959 SGD

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
$228 SGD