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 $190 USD
As of November 4, 2026
Save $870 USD (82%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,060 USD 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 4, 2026, with prices from $190 to $1,060, a $870 spread on the same certified stone. Brilliant Earth lists it at $1,060. 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
Color
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 4
Current: $1,060 USD|Low: $186 USD|High: $1,320 USD|Avg: $630 USD|-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$190 USD
Retailer 6$355 USD
Retailer 8$369 USD
Retailer 4$380 USD
Retailer 5$449 USD
Retailer 2$540 USD
Retailer 9$721 USD
Retailer 3$915 USD
Brilliant Earth$1,060 USD
Retailer 10$1,125 USD

26 data points across 10 retailers

9 retailers$190 USD to $1,060 USD

A
Cheapest Retailer
-
$190 USD
Final sale: no returns
Retailer 2
-
$196 USD
View
Price last confirmed 42 days ago
B+
Retailer 3
-
$355 USD
View
Retailer 4
-
$380 USD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
$449 USD
View
B+
Retailer 6
-
$540 USD
View
B
Retailer 7
-
$890 USD
View
B
Retailer 8
-
$915 USD
View
Most Expensive
B
Brilliant Earth
18959383A · Nov 5
$1,060 USD
View
8 more retailers have this diamond
Prices start from $190 USDSave up to $870 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 Asscher
$190 USD