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 $190 USD
As of October 30, 2026
Save $925 USD (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,788 USD 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
Color
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

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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: Oct 30
Current: $213 USD|Low: $190 USD|High: $1,143 USD|Avg: $548 USD|-3.6%
Retailer 1
Retailer 2
Retailer 3
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Retailer 11
Retailer 12
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Retailer 20
October 30, 2026
Retailer 12$190 USD
Retailer 1$213 USD
Retailer 3$222 USD
Retailer 17$237 USD
Retailer 8$238 USD
Retailer 15$270 USD
Retailer 20$320 USD
Retailer 11$393 USD
Retailer 4$407 USD
Retailer 16$432 USD
Retailer 9$562 USD
Retailer 6$582 USD
Retailer 10$635 USD
Retailer 19$763 USD
Retailer 7$769 USD
Retailer 5$773 USD
Retailer 2$798 USD
Retailer 14$813 USD
Retailer 13$1,075 USD
Retailer 18$1,115 USD

16 data points across 20 retailers

21 retailers$190 USD to $1,115 USD

A
Cheapest Retailer
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$190 USD
A
Retailer 2
-
$213 USD
View
Final sale: no returns
A
Retailer 3
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$222 USD
View
A
Retailer 4
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$237 USD
View
A
Retailer 5
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$238 USD
View
A
Retailer 6
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$270 USD
£213 GBP
View
B+
Retailer 7
-
$320 USD
View
A
Retailer 8
-
$393 USD
€374 EUR
View
A
Retailer 9
-
$407 USD
ZAR 6,581 ZAR
View
A
Retailer 10
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$432 USD
£340 GBP
View
A
Retailer 11
-
$562 USD
View
A
Retailer 12
-
$582 USD
A$895 AUD
View
B+
Retailer 13
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$635 USD
View
B+
Retailer 14
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$763 USD
View
B+
Retailer 15
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$769 USD
View
B+
Retailer 16
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$773 USD
SGD 1,045 SGD
View
B+
Retailer 17
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$798 USD
View
B+
Retailer 18
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$813 USD
View
Retailer 19
-
$1,075 USD
View
Price last confirmed 11 days ago
B+
Retailer 20
-
$1,115 USD
£878 GBP
View
Most Expensive
Helzberg Diamonds
ZXZOKHMIPLLG · Oct 13
$1,788 USD
View
Price last confirmed 17 days ago
20 more retailers have this diamond
Prices start from $190 USDSave up to $925 USD

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
$190 USD