CaratHunter
Plans
Asscher|Lab Grown|IGI

1.23ct D IF Asscher Lab Grown Diamond

ID • D/IF • IGI LG799692158

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG799692158

Diamond specifications and retailer prices

From £357 GBP
$479 USD
As of November 1, 2026
Save £1,284 GBP (78%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,642 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 1.23ct lab-grown asscher diamond

This 1.23ct lab-grown asscher sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG799692158 or 799692158. Listed at 5 retailers as of October 26, 2026, with prices from £357 to £1,642, a £1,284 spread on the same certified stone. Brilliant Earth lists it at £1,642. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle46.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799692158
Dimensions5.84 × 5.83 × 3.94 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
5.84 mm5.83 mm1.23 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799692158
Side View
Table 63.0%Crown 36.2°Girdle: MediumPavilion 46.4°Culet: NoneDepth 67.6%

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: £1,642 GBP|Low: £343 GBP|High: £1,717 GBP|Avg: £702 GBP|-3.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 4£357 GBP
Retailer 5£379 GBP
Retailer 6£389 GBP
Retailer 3£391 GBP
Retailer 7£436 GBP
Retailer 9£774 GBP
Retailer 2£845 GBP
Retailer 8£1,049 GBP
Brilliant Earth£1,642 GBP

25 data points across 9 retailers

5 retailers£357 GBP to £1,642 GBP

A
Cheapest Retailer
-
£357 GBP
$479 USD
Retailer 2
-
£379 GBP
€483 EUR
View
Price last confirmed 8 days ago
A
Retailer 3
-
£391 GBP
$524 USD
View
B+
Retailer 4
-
£845 GBP
View
Most Expensive
B
Brilliant Earth
19835401A · Oct 26
£1,642 GBP
$2,200 USD
View
4 more retailers have this diamond
Prices start from £357 GBPSave up to £1,284 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
1.23ct Asscher
£357 GBP