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Marquise|Lab Grown|IGI

1.28ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG818660512

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818660512

Diamond specifications and retailer prices

From $878 NZD
$494 USD
As of November 1, 2026
Save $393 NZD (31%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,501 NZD at Taylor and Hart · As of October 16, 2026
View at Taylor and Hart

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 F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818660512 or 818660512. Listed at 5 retailers as of October 28, 2026, with a 45% 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
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818660512
Dimensions12.85 × 5.23 × 3.33 mm
L/W Ratio2.46
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.85 mm5.23 mm1.28 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG818660512
Side View
Table 55.0%Crown 34°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 63.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,271 NZD|Low: $572 NZD|High: $7,124 NZD|Avg: $1,627 NZD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Taylor and Hart
October 28, 2026
Retailer 4$590 NZD
Retailer 5$705 NZD
Retailer 10$713 NZD
Retailer 6$749 NZD
Retailer 3$878 NZD
Retailer 7$999 NZD
Retailer 8$1,191 NZD
Retailer 1$1,271 NZD
Taylor and Hart$1,501 NZD
Retailer 9$1,986 NZD
Retailer 2$7,124 NZD

9 data points across 11 retailers

5 retailers$878 NZD to $1,271 NZD

Retailer 1
-
$590 NZD
$332 USD
Price last confirmed 11 days ago
A
Retailer 2
-
$878 NZD
$494 USD
View
Retailer 3
-
$1,191 NZD
$670 USD
View
Price last confirmed 41 days ago
B
Retailer 4
-
$1,271 NZD
A$1,100 AUD
View
Most Expensive
Taylor and Hart
XIN0EJI · Oct 16
$1,501 NZD
$844 USD
View
Price last confirmed 17 days ago
4 more retailers have this diamond
Prices start from $878 NZDSave up to $393 NZD

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
$878 NZD