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Asscher|Lab Grown|IGI

1.56ct D SI1 Asscher Lab Grown Diamond

GD • D/SI1 • IGI LG620421777

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG620421777

Diamond specifications and retailer prices

From £161 GBP
$216 USD
As of October 30, 2026
Save £794 GBP (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £955 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.56ct lab-grown asscher diamond

This 1.56ct lab-grown asscher sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG620421777 or 620421777. Listed at 10 retailers as of October 30, 2026, with prices from £161 to £955, a £794 spread on the same certified stone. Brilliant Earth lists it at £955. 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

1.56
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle42.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620421777
Dimensions6.35 × 6.32 × 4.19 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
6.35 mm6.32 mm1.56 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620421777
Side View
Table 59.0%Crown 32.3°Girdle: Slightly ThickPavilion 42.6°Culet: NoneDepth 66.3%

Caratlytics Score

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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 30
Current: £955 GBP|Low: £161 GBP|High: £955 GBP|Avg: £421 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 10£161 GBP
Retailer 4£199 GBP
Retailer 3£210 GBP
Retailer 8£240 GBP
Retailer 5£305 GBP
Retailer 9£322 GBP
Retailer 2£325 GBP
Retailer 7£372 GBP
Retailer 11£493 GBP
Retailer 6£839 GBP
Brilliant Earth£955 GBP

41 data points across 11 retailers

10 retailers£161 GBP to £955 GBP

A
Cheapest Retailer
-
£161 GBP
$216 USD
Final sale: no returns
A
Retailer 2
-
£199 GBP
View
B+
Retailer 3
-
£240 GBP
$322 USD
View
A
Retailer 4
-
£305 GBP
€389 EUR
View
B+
Retailer 5
-
£322 GBP
View
A
Retailer 6
-
£325 GBP
View
B+
Retailer 7
-
£372 GBP
$499 USD
View
Retailer 8
-
£493 GBP
$661 USD
View
Price last confirmed 26 days ago
B
Retailer 9
-
£839 GBP
View
Most Expensive
B
Brilliant Earth
11237803A · Oct 31
£955 GBP
$1,280 USD
View
9 more retailers have this diamond
Prices start from £161 GBPSave up to £794 GBP

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
1.56ct Asscher
£161 GBP