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Asscher|Lab Grown|IGI

1.78ct D FL Asscher Lab Grown Diamond

VG • D/FL • IGI LG831687608

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG831687608

Diamond specifications and retailer prices

From £452 GBP
As of October 30, 2026
Save £3,821 GBP (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,273 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.78ct lab-grown asscher diamond

This 1.78ct lab-grown asscher sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG831687608 or 831687608. Listed at 13 retailers as of October 28, 2026, with prices from £452 to £4,273, a £3,821 spread on the same certified stone. Brilliant Earth lists it at £4,273. 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

1.78
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831687608
Dimensions6.71 × 6.69 × 4.44 mm
L/W Ratio1.00
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
6.71 mm6.69 mm1.78 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831687608
Side View
Table 64.0%Crown 32.2°Girdle: MED-STKPavilion 38.4°Culet: NoneDepth 66.4%

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: Oct 30
Current: £452 GBP|Low: £452 GBP|High: £2,548 GBP|Avg: £1,100 GBP|-0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 1£452 GBP
Retailer 12£500 GBP
Retailer 9£533 GBP
Retailer 8£667 GBP
Retailer 5£705 GBP
Retailer 7£733 GBP
Retailer 6£878 GBP
Retailer 10£1,060 GBP
Retailer 4£1,394 GBP
Retailer 11£1,487 GBP
Retailer 2£1,821 GBP
Retailer 3£2,548 GBP

5 data points across 12 retailers

13 retailers£452 GBP to £4,273 GBP

A
Cheapest Retailer
-
£452 GBP
A
Retailer 2
-
£500 GBP
$666 USD
View
Final sale: no returns
A
Retailer 3
-
£533 GBP
$710 USD
View
A
Retailer 4
-
£667 GBP
$888 USD
View
A
Retailer 5
-
£705 GBP
View
A
Retailer 6
-
£733 GBP
ZAR 15,764 ZAR
View
B+
Retailer 7
-
£878 GBP
€1,114 EUR
View
B+
Retailer 8
-
£1,060 GBP
$1,411 USD
View
B+
Retailer 9
-
£1,394 GBP
$1,856 USD
View
B
Retailer 10
-
£1,487 GBP
$1,980 USD
View
B
Retailer 11
-
£1,821 GBP
SGD 3,277 SGD
View
B
Retailer 12
-
£2,548 GBP
$3,393 USD
View
Most Expensive
B
Brilliant Earth
22310941A · Oct 28
£4,273 GBP
$5,690 USD
View
12 more retailers have this diamond
Prices start from £452 GBPSave up to £3,821 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
1.78ct Asscher
£452 GBP