CaratHunter
Plans
Asscher|Lab Grown|IGI

3.11ct D SI1 Asscher Lab Grown Diamond

GD • D/SI1 • IGI LG478109494

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG478109494

Diamond specifications and retailer prices

From £402 GBP
As of November 2, 2026
Save £1,875 GBP (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,277 GBP at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 3.11ct lab-grown asscher diamond

This 3.11ct lab-grown asscher sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG478109494 or 478109494. Listed at 16 retailers as of November 1, 2026, with prices from £402 to £2,277, a £1,875 spread on the same certified stone. Rare Carat lists it at £2,277. 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

3.11
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle16.1°
Pavilion angle47.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478109494
Dimensions8.05 × 8.03 × 5.24 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
8.05 mm8.03 mm3.11 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478109494
Side View
Table 66.5%Crown 16.1°Girdle: MediumPavilion 47.9°Culet: NoneDepth 65.3%

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 2
Current: £2,277 GBP|Low: £402 GBP|High: £7,145 GBP|Avg: £1,015 GBP|-1.4%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 3, 2026
Retailer 8£402 GBP
Retailer 4£450 GBP
Retailer 12£450 GBP
Retailer 3£499 GBP
Retailer 9£499 GBP
Retailer 13£650 GBP
Retailer 5£707 GBP
Retailer 10£750 GBP
Retailer 2£776 GBP
Retailer 7£1,285 GBP
Retailer 11£1,311 GBP
Retailer 6£2,080 GBP
Rare Carat£2,277 GBP

42 data points across 13 retailers

16 retailers£402 GBP to £2,277 GBP

A
Cheapest Retailer
-
£402 GBP
B+
Retailer 2
-
£450 GBP
View
Final sale: no returns
B+
Retailer 3
-
£450 GBP
View
B+
Retailer 4
-
£499 GBP
View
Retailer 5
-
£499 GBP
View
Price last confirmed 21 days ago
B+
Retailer 6
-
£542 GBP
View
B+
Retailer 7
-
£598 GBP
View
B+
Retailer 8
-
£650 GBP
View
B+
Retailer 9
-
£707 GBP
View
Retailer 10
-
£750 GBP
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£776 GBP
View
B
Retailer 12
-
£1,285 GBP
View
B
Retailer 13
-
£1,311 GBP
View
B
Retailer 14
-
£2,080 GBP
View
C
Retailer 15
-
£2,201 GBP
View
Most Expensive
C
Rare Carat
284-11_l_478109494 · Nov 1
£2,277 GBP
$3,065 USD
View
15 more retailers have this diamond
Prices start from £402 GBPSave up to £1,875 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
3.11ct Asscher
£402 GBP