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Asscher|Lab Grown|IGI

1.70ct D FL Asscher Lab Grown Diamond

ID • D/FL • IGI LG818654059

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG818654059

Diamond specifications and retailer prices

From £328 GBP
$439 USD
As of October 27, 2026
Save £3,725 GBP (92%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £4,053 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.7ct lab-grown asscher diamond

This 1.7ct 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 top-tier cut grade and certified by IGI LG818654059 or 818654059. Listed at 22 retailers as of October 27, 2026, with prices from £328 to £4,053, a £3,725 spread on the same certified stone. Brilliant Earth lists it at £4,053. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818654059
Dimensions6.63 × 6.58 × 4.26 mm
L/W Ratio1.01
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
6.63 mm6.58 mm1.70 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818654059
Side View
Table 59.0%Crown 33.2°Girdle: Slightly ThickPavilion 39.1°Culet: NoneDepth 64.7%

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 27
Current: £4,053 GBP|Low: £328 GBP|High: £4,067 GBP|Avg: £1,313 GBP|-0.4%
Brilliant Earth
Retailer 2
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Retailer 22
October 30, 2026
Retailer 11£328 GBP
Retailer 8£366 GBP
Retailer 4£406 GBP
Retailer 22£406 GBP
Retailer 12£475 GBP
Retailer 18£515 GBP
Retailer 5£590 GBP
Retailer 21£638 GBP
Retailer 2£670 GBP
Retailer 17£698 GBP
Retailer 13£835 GBP
Retailer 6£966 GBP
Retailer 20£981 GBP
Retailer 3£1,305 GBP
Retailer 7£1,330 GBP
Retailer 19£1,412 GBP
Retailer 16£1,499 GBP
Retailer 15£1,649 GBP
Retailer 9£1,732 GBP
Retailer 10£2,418 GBP
Retailer 14£2,799 GBP
Brilliant Earth£4,053 GBP

24 data points across 22 retailers

22 retailers£328 GBP to £4,053 GBP

A
Cheapest Retailer
-
£328 GBP
$439 USD
A
Retailer 2
-
£366 GBP
$491 USD
View
A
Retailer 3
-
£406 GBP
$544 USD
View
A
Retailer 4
-
£406 GBP
$544 USD
View
A
Retailer 5
-
£475 GBP
$636 USD
View
Final sale: no returns
A
Retailer 6
-
£515 GBP
$690 USD
View
A
Retailer 7
-
£590 GBP
$790 USD
View
A
Retailer 8
-
£638 GBP
$855 USD
View
A
Retailer 9
-
£670 GBP
View
A
Retailer 10
-
£698 GBP
ZAR 15,099 ZAR
View
A
Retailer 11
-
£835 GBP
€1,066 EUR
View
B+
Retailer 12
-
£966 GBP
$1,295 USD
View
B+
Retailer 13
-
£981 GBP
$1,314 USD
View
B+
Retailer 14
-
£1,305 GBP
$1,748 USD
View
B+
Retailer 15
-
£1,330 GBP
$1,782 USD
View
B+
Retailer 16
-
£1,412 GBP
$1,892 USD
View
B+
Retailer 17
-
£1,499 GBP
View
Retailer 18
-
£1,649 GBP
View
Price last confirmed 8 days ago
B+
Retailer 19
-
£1,732 GBP
SGD 3,136 SGD
View
B
Retailer 20
-
£2,418 GBP
$3,240 USD
View
Retailer 21
-
£2,799 GBP
$3,750 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
21421269A · Oct 28
£4,053 GBP
$5,430 USD
View
21 more retailers have this diamond
Prices start from £328 GBPSave up to £3,725 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
1.70ct Asscher
£328 GBP