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Radiant|Lab Grown|IGI

1.28ct D VVS1 Radiant Lab Grown Diamond

ID • D/VVS1 • IGI LG841629550

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

Certificate IGI LG841629550

Diamond specifications and retailer prices

From $270 AUD
$190 USD
As of October 30, 2026
Save $1,317 AUD (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,545 AUD at Helzberg Diamonds · As of October 13, 2026
View at Helzberg 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 D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG841629550 or 841629550. Listed at 21 retailers as of October 29, 2026, with a 487% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.2°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841629550
Dimensions7.75 × 5.13 × 3.56 mm
L/W Ratio1.51
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.75 mm5.13 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841629550
Side View
Table 66.0%Crown 46.2°Girdle: STK-THKPavilion 33.8°Culet: NoneDepth 69.4%

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: Oct 30
Current: $315 AUD|Low: $270 AUD|High: $1,627 AUD|Avg: $779 AUD|-1.3%
Retailer 1
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 31, 2026
Retailer 18$270 AUD
Retailer 17$303 AUD
Retailer 1$315 AUD
Retailer 2$337 AUD
Retailer 9$339 AUD
Retailer 20$385 AUD
Retailer 5$456 AUD
Retailer 11$559 AUD
Retailer 6$580 AUD
Retailer 12$611 AUD
Retailer 16$797 AUD
Retailer 8$828 AUD
Retailer 10$904 AUD
Retailer 14$1,083 AUD
Retailer 4$1,086 AUD
Retailer 7$1,101 AUD
Retailer 15$1,129 AUD
Retailer 19$1,157 AUD
Retailer 13$1,530 AUD
Retailer 3$1,587 AUD

16 data points across 20 retailers

21 retailers$270 AUD to $1,587 AUD

A
Cheapest Retailer
-
$270 AUD
$190 USD
A
Retailer 2
-
$303 AUD
$213 USD
View
Final sale: no returns
A
Retailer 3
-
$315 AUD
$221 USD
View
A
Retailer 4
-
$337 AUD
$237 USD
View
A
Retailer 5
-
$339 AUD
$238 USD
View
A
Retailer 6
-
$385 AUD
£213 GBP
View
B+
Retailer 7
-
$456 AUD
$320 USD
View
Retailer 8
-
$559 AUD
€374 EUR
View
Price last confirmed 8 days ago
A
Retailer 9
-
$580 AUD
ZAR 6,581 ZAR
View
A
Retailer 10
-
$611 AUD
£338 GBP
View
A
Retailer 11
-
$797 AUD
$560 USD
View
A
Retailer 12
-
$828 AUD
View
B+
Retailer 13
-
$904 AUD
$635 USD
View
B+
Retailer 14
-
$1,083 AUD
$761 USD
View
B+
Retailer 15
-
$1,086 AUD
$763 USD
View
B+
Retailer 16
-
$1,101 AUD
SGD 1,045 SGD
View
B+
Retailer 17
-
$1,129 AUD
$793 USD
View
B+
Retailer 18
-
$1,157 AUD
$813 USD
View
Retailer 19
-
$1,530 AUD
$1,075 USD
View
Price last confirmed 12 days ago
B+
Retailer 20
-
$1,587 AUD
£878 GBP
View
Most Expensive
Helzberg Diamonds
ZXZOKHMIPLLG · Oct 13
$2,545 AUD
$1,788 USD
View
Price last confirmed 18 days ago
20 more retailers have this diamond
Prices start from $270 AUDSave up to $1,317 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
$270 AUD