Radiant|Lab Grown|IGI

1.28ct D VVS1 Radiant Lab Grown Diamond

ID • D/VVS1 • IGI LG838660684

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

Certificate IGI LG838660684

Diamond specifications and retailer prices

From $190 USD
As of October 30, 2026
Save $623 USD (77%) 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 LG838660684 or 838660684. Listed at 21 retailers as of October 30, 2026, with a 328% 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 angle40.4°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838660684
Dimensions8.19 × 5.13 × 3.49 mm
L/W Ratio1.60
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.19 mm5.13 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838660684
Side View
Table 67.0%Crown 40.4°Girdle: STK-THKPavilion 33.7°Culet: NoneDepth 68.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $413 USD|Low: $190 USD|High: $1,390 USD|Avg: $616 USD|+24.4%
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 30, 2026
Retailer 12$190 USD
Retailer 20$214 USD
Retailer 2$222 USD
Retailer 17$237 USD
Retailer 13$238 USD
Retailer 15$270 USD
Retailer 7$390 USD
Retailer 9$406 USD
Retailer 1$413 USD
Retailer 16$432 USD
Retailer 11$562 USD
Retailer 10$587 USD
Retailer 8$635 USD
Retailer 19$763 USD
Retailer 3$765 USD
Retailer 18$773 USD
Retailer 5$798 USD
Retailer 14$813 USD
Retailer 6$1,070 USD
Retailer 4$1,115 USD

24 data points across 20 retailers

21 retailers$190 USD to $813 USD

A
Cheapest Retailer
-
$190 USD
A
Retailer 2
-
$214 USD
View
Final sale: no returns
A
Retailer 3
-
$222 USD
View
A
Retailer 4
-
$237 USD
View
Retailer 5
-
$238 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$270 USD
£213 GBP
View
Retailer 7
-
$406 USD
ZAR 6,556 ZAR
View
Price last confirmed 12 days ago
Retailer 8
-
$413 USD
View
A
Retailer 9
-
$432 USD
£340 GBP
View
Retailer 10
-
$562 USD
View
Price last confirmed 10 days ago
Retailer 11
-
$587 USD
A$903 AUD
View
Price last confirmed 12 days ago
B+
Retailer 12
-
$635 USD
View
B+
Retailer 13
-
$763 USD
View
Retailer 14
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$765 USD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
$773 USD
SGD 1,045 SGD
View
B+
Retailer 16
-
$798 USD
View
B+
Retailer 17
-
$813 USD
View
Retailer 18
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$972 USD
A$1,496 AUD
View
Price last confirmed 25 days ago
Retailer 19
-
$1,070 USD
View
Price last confirmed 11 days ago
Retailer 20
-
$1,115 USD
£878 GBP
View
Price last confirmed 9 days ago
Most Expensive
Helzberg Diamonds
ZXZOJOMMGMOK · 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 $623 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