CaratHunter
Plans
Asscher|Lab Grown|IGI

1.42ct D IF Asscher Lab Grown Diamond

GD • D/IF • IGI LG591368505

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG591368505

Diamond specifications and retailer prices

From £379 GBP
$508 USD
As of November 1, 2026
Save £1,592 GBP (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,971 GBP at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 1.42ct lab-grown asscher diamond

This 1.42ct lab-grown asscher sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG591368505 or 591368505. Listed at 14 retailers as of November 1, 2026, with prices from £379 to £1,971, a £1,592 spread on the same certified stone. Rare Carat lists it at £1,971. 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

1.42
Carat
D
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.6°
Pavilion angle42.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591368505
Dimensions6.17 × 6.15 × 4.02 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
6.17 mm6.15 mm1.42 ctD / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591368505
Side View
Table 63.0%Crown 30.6°Girdle: MediumPavilion 42.5°Culet: NoneDepth 65.4%

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: £1,971 GBP|Low: £379 GBP|High: £2,001 GBP|Avg: £913 GBP|+1.6%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 9£379 GBP
Retailer 7£420 GBP
Retailer 8£594 GBP
Retailer 6£659 GBP
Retailer 2£695 GBP
Retailer 3£724 GBP
Retailer 5£1,023 GBP
Retailer 10£1,136 GBP
Retailer 4£1,543 GBP
Rare Carat£1,971 GBP

41 data points across 10 retailers

14 retailers£379 GBP to £1,971 GBP

A
Cheapest Retailer
-
£379 GBP
$508 USD
Final sale: no returns
Retailer 2
-
£420 GBP
$564 USD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
£525 GBP
$705 USD
View
B+
Retailer 4
-
£594 GBP
$797 USD
View
B+
Retailer 5
-
£659 GBP
$884 USD
View
B+
Retailer 6
-
£695 GBP
View
B+
Retailer 7
-
£695 GBP
View
B+
Retailer 8
-
£724 GBP
ZAR 15,704 ZAR
View
B
Retailer 9
-
£813 GBP
$1,091 USD
View
B
Retailer 10
-
£1,023 GBP
A$2,113 AUD
View
B
Retailer 11
-
£1,374 GBP
$1,843 USD
View
B
Retailer 12
-
£1,495 GBP
$2,006 USD
View
B
Retailer 13
-
£1,543 GBP
View
Most Expensive
B
Rare Carat
SQ EM-29_l_591368505 · Nov 1
£1,971 GBP
$2,645 USD
View
13 more retailers have this diamond
Prices start from £379 GBPSave up to £1,592 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
1.42ct Asscher
£379 GBP