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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 $315 AUD
$221 USD
As of October 30, 2026
Save $1,621 AUD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,936 AUD 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 $315 to $1,936, a $1,621 spread on the same certified stone. Brilliant Earth lists it at $1,936. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,936 AUD|Low: $310 AUD|High: $2,021 AUD|Avg: $985 AUD|-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$315 AUD
Retailer 11$353 AUD
Retailer 16$366 AUD
Retailer 4$390 AUD
Retailer 6$390 AUD
Retailer 3$527 AUD
Retailer 14$671 AUD
Retailer 19$677 AUD
Retailer 2$727 AUD
Retailer 20$881 AUD
Retailer 15$955 AUD
Retailer 9$1,255 AUD
Retailer 17$1,260 AUD
Retailer 18$1,281 AUD
Retailer 12$1,293 AUD
Retailer 10$1,330 AUD
Retailer 8$1,345 AUD
Retailer 13$1,573 AUD
Retailer 5$1,796 AUD
Brilliant Earth$1,936 AUD

37 data points across 20 retailers

20 retailers$315 AUD to $1,936 AUD

A
Cheapest Retailer
-
$315 AUD
$221 USD
A
Retailer 2
-
$353 AUD
$248 USD
View
Final sale: no returns
A
Retailer 3
-
$366 AUD
$257 USD
View
A
Retailer 4
-
$390 AUD
$274 USD
View
A
Retailer 5
-
$390 AUD
$274 USD
View
B+
Retailer 6
-
$527 AUD
$370 USD
View
A
Retailer 7
-
$671 AUD
ZAR 7,614 ZAR
View
A
Retailer 8
-
$677 AUD
€453 EUR
View
A
Retailer 9
-
$727 AUD
£402 GBP
View
B+
Retailer 10
-
$881 AUD
$619 USD
View
B+
Retailer 11
-
$955 AUD
View
B+
Retailer 12
-
$1,255 AUD
$882 USD
View
B+
Retailer 13
-
$1,260 AUD
$885 USD
View
Retailer 14
-
$1,281 AUD
$900 USD
View
Price last confirmed 8 days ago
Retailer 15
-
$1,293 AUD
View
Price last confirmed 25 days ago
B+
Retailer 16
-
$1,330 AUD
$935 USD
View
B+
Retailer 17
-
$1,345 AUD
$945 USD
View
B
Retailer 18
-
$1,573 AUD
£870 GBP
View
B
Retailer 19
-
$1,796 AUD
$1,261 USD
View
Most Expensive
B
Brilliant Earth
21123272A · Oct 29
$1,936 AUD
$1,360 USD
View
19 more retailers have this diamond
Prices start from $315 AUDSave up to $1,621 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
$315 AUD