Radiant|Lab Grown|IGI

1.28ct D VS1 Radiant Lab Grown Diamond

VG • D/VS1 • IGI LG640416964

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

Certificate IGI LG640416964

Diamond specifications and retailer prices

From $214 USD
As of November 4, 2026
Save $1,846 USD (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,060 USD at Do Amore Diamonds · As of November 4, 2026
View at Do Amore 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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG640416964 or 640416964. Listed at 17 retailers as of November 4, 2026, with prices from $214 to $2,060, a $1,846 spread on the same certified stone. Do Amore Diamonds lists it at $2,060. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
D
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG640416964
Dimensions7.87 × 5.25 × 3.60 mm
L/W Ratio1.50
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.87 mm5.25 mm1.28 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG640416964
Side View
Table 64.0%Crown 41.9°Girdle: MediumPavilion 35.6°Culet: NoneDepth 68.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $549 USD|Low: $206 USD|High: $1,390 USD|Avg: $611 USD|+3.6%
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
November 5, 2026
Retailer 10$214 USD
Retailer 5$239 USD
Retailer 2$248 USD
Retailer 3$266 USD
Retailer 12$266 USD
Retailer 14$455 USD
Retailer 1$549 USD
Retailer 4$586 USD
Retailer 7$718 USD
Retailer 11$720 USD
Retailer 9$857 USD
Retailer 13$943 USD
Retailer 8$1,174 USD
Retailer 6$1,390 USD

44 data points across 14 retailers

17 retailers$214 USD to $2,060 USD

A
Cheapest Retailer
-
$214 USD
A
Retailer 2
-
$239 USD
View
Final sale: no returns
A
Retailer 3
-
$248 USD
View
Retailer 4
-
$266 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$266 USD
View
A
Retailer 6
-
$401 USD
View
B+
Retailer 7
-
$455 USD
View
B+
Retailer 8
-
$549 USD
View
B+
Retailer 9
-
$586 USD
View
B+
Retailer 10
-
$718 USD
View
Retailer 11
-
$720 USD
View
Price last confirmed 18 days ago
B
Retailer 12
-
$857 USD
View
B
Retailer 13
-
$943 USD
View
B
Retailer 14
-
$1,113 USD
View
B
Retailer 15
-
$1,174 USD
View
B
Retailer 16
-
$1,238 USD
View
Most Expensive
B
Do Amore Diamonds
27-C161B56EA · Nov 4
$2,060 USD
View
16 more retailers have this diamond
Prices start from $214 USDSave up to $1,846 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
$214 USD