Marquise|Lab Grown|IGI

1.28ct D VS1 Marquise Lab Grown Diamond

ID • D/VS1 • IGI LG816654290

Shape and cutting style on the report: Hexagonal mixed cut

Certificate IGI LG816654290

Diamond specifications and retailer prices

From $361 USD
As of October 28, 2026
Save $1,314 USD (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $2,770 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.28ct lab-grown marquise diamond

This 1.28ct lab-grown marquise 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 top-tier cut grade and certified by IGI LG816654290 or 816654290. Listed at 7 retailers as of October 28, 2026, with a 364% 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.1°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816654290
Dimensions10.45 × 5.13 × 3.64 mm
L/W Ratio2.04
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.45 mm5.13 mm1.28 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816654290
Side View
Table 64.0%Crown 39.1°Girdle: STK-THKPavilion 33.2°Culet: NoneDepth 70.9%

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 28
Current: $2,770 USD|Low: $361 USD|High: $2,770 USD|Avg: $961 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 3$361 USD
Retailer 5$492 USD
Retailer 7$519 USD
Retailer 6$683 USD
Retailer 4$1,542 USD
Retailer 2$1,675 USD
Do Amore Diamonds$2,770 USD

6 data points across 7 retailers

7 retailers$361 USD to $1,675 USD

A
Cheapest Retailer
-
$361 USD
A
Retailer 2
-
$492 USD
View
A
Retailer 3
-
$519 USD
View
B+
Retailer 4
-
$683 USD
View
B
Retailer 5
-
$1,542 USD
View
B
Retailer 6
-
$1,675 USD
£1,319 GBP
View
Most Expensive
Do Amore Diamonds
27-1BA81B41C · Oct 29
$2,770 USD
View
Price under review
6 more retailers have this diamond
Prices start from $361 USDSave up to $1,314 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 Marquise
$361 USD