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Radiant|Lab Grown|IGI

1.28ct E VVS1 Radiant Lab Grown Diamond

ID • E/VVS1 • IGI LG831645783

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

Certificate IGI LG831645783

Diamond specifications and retailer prices

From $283 SGD
$221 USD
As of October 30, 2026
Save $1,460 SGD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,743 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG831645783 or 831645783. Listed at 20 retailers as of October 29, 2026, with prices from $283 to $1,743, a $1,460 spread on the same certified stone. Brilliant Earth lists it at $1,743. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831645783
Dimensions7.80 × 5.38 × 3.62 mm
L/W Ratio1.45
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.80 mm5.38 mm1.28 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831645783
Side View
Table 63.0%Crown 40.5°Girdle: MediumPavilion 35.4°Culet: NoneDepth 67.3%

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: Oct 30
Current: $1,743 SGD|Low: $279 SGD|High: $1,820 SGD|Avg: $887 SGD|-4.2%
Brilliant Earth
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 30, 2026
Retailer 7$283 SGD
Retailer 11$318 SGD
Retailer 16$329 SGD
Retailer 4$351 SGD
Retailer 6$351 SGD
Retailer 3$474 SGD
Retailer 14$604 SGD
Retailer 19$610 SGD
Retailer 2$654 SGD
Retailer 20$793 SGD
Retailer 15$860 SGD
Retailer 9$1,130 SGD
Retailer 17$1,134 SGD
Retailer 18$1,154 SGD
Retailer 12$1,164 SGD
Retailer 10$1,198 SGD
Retailer 8$1,211 SGD
Retailer 13$1,416 SGD
Retailer 5$1,617 SGD
Brilliant Earth$1,743 SGD

37 data points across 20 retailers

20 retailers$283 SGD to $1,743 SGD

A
Cheapest Retailer
-
$283 SGD
$221 USD
A
Retailer 2
-
$318 SGD
$248 USD
View
Final sale: no returns
A
Retailer 3
-
$329 SGD
$257 USD
View
A
Retailer 4
-
$351 SGD
$274 USD
View
A
Retailer 5
-
$351 SGD
$274 USD
View
B+
Retailer 6
-
$474 SGD
$370 USD
View
A
Retailer 7
-
$604 SGD
ZAR 7,614 ZAR
View
A
Retailer 8
-
$610 SGD
€453 EUR
View
A
Retailer 9
-
$654 SGD
£402 GBP
View
B+
Retailer 10
-
$793 SGD
$619 USD
View
B+
Retailer 11
-
$860 SGD
A$1,032 AUD
View
B+
Retailer 12
-
$1,130 SGD
$882 USD
View
B+
Retailer 13
-
$1,134 SGD
$885 USD
View
Retailer 14
-
$1,154 SGD
$900 USD
View
Price last confirmed 8 days ago
Retailer 15
-
$1,164 SGD
A$1,397 AUD
View
Price last confirmed 25 days ago
B+
Retailer 16
-
$1,198 SGD
$935 USD
View
B+
Retailer 17
-
$1,211 SGD
$945 USD
View
B
Retailer 18
-
$1,416 SGD
£870 GBP
View
B
Retailer 19
-
$1,617 SGD
$1,261 USD
View
Most Expensive
B
Brilliant Earth
21123272A · Oct 29
$1,743 SGD
$1,360 USD
View
19 more retailers have this diamond
Prices start from $283 SGDSave up to $1,460 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
$283 SGD