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Asscher|Lab Grown|IGI

1.28ct D SI1 Asscher Lab Grown Diamond

ID • D/SI1 • IGI LG793632548

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG793632548

Diamond specifications and retailer prices

From $338 NZD
As of November 6, 2026
Save $1,548 NZD (82%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,886 NZD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.28ct lab-grown asscher diamond

This 1.28ct lab-grown asscher sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG793632548 or 793632548. Listed at 9 retailers as of November 5, 2026, with prices from $338 to $1,886, a $1,548 spread on the same certified stone. Brilliant Earth lists it at $1,886. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.28
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.4°
Pavilion angle42.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG793632548
Dimensions6.00 × 5.99 × 3.84 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.00 mm5.99 mm1.28 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG793632548
Side View
Table 60.0%Crown 31.4°Girdle: MediumPavilion 42.6°Culet: NoneDepth 64.1%

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: Nov 6
Current: $1,886 NZD|Low: $331 NZD|High: $2,348 NZD|Avg: $1,121 NZD|-19.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 7$338 NZD
Retailer 6$632 NZD
Retailer 8$656 NZD
Retailer 4$676 NZD
Retailer 5$799 NZD
Retailer 2$961 NZD
Retailer 9$1,283 NZD
Retailer 3$1,628 NZD
Brilliant Earth$1,886 NZD
Retailer 10$2,001 NZD

26 data points across 10 retailers

9 retailers$338 NZD to $1,886 NZD

A
Cheapest Retailer
-
$338 NZD
Final sale: no returns
Retailer 2
-
$349 NZD
View
Price last confirmed 42 days ago
B+
Retailer 3
-
$632 NZD
View
Retailer 4
-
$676 NZD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
$799 NZD
View
B+
Retailer 6
-
$961 NZD
View
B
Retailer 7
-
$1,583 NZD
View
B
Retailer 8
-
$1,628 NZD
View
Most Expensive
B
Brilliant Earth
18959383A · Nov 5
$1,886 NZD
$1,060 USD
View
8 more retailers have this diamond
Prices start from $338 NZDSave up to $1,548 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 Asscher
$338 NZD