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Asscher|Lab Grown|IGI

1.65ct G SI1 Asscher Lab Grown Diamond

ID • G/SI1 • IGI LG659456560

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG659456560

Diamond specifications and retailer prices

From £149 GBP
$199 USD
As of November 1, 2026
Save £732 GBP (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £881 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.65ct lab-grown asscher diamond

This 1.65ct lab-grown asscher sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG659456560 or 659456560. Listed at 15 retailers as of October 31, 2026, with prices from £149 to £881, a £732 spread on the same certified stone. Brilliant Earth lists it at £881. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.65
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659456560
Dimensions6.60 × 6.59 × 4.27 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
6.60 mm6.59 mm1.65 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG659456560
Side View
Table 60.0%Crown 32.1°Girdle: MediumPavilion 39°Culet: NoneDepth 64.8%

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: Nov 1
Current: £881 GBP|Low: £149 GBP|High: £1,336 GBP|Avg: £458 GBP|-34.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 13£149 GBP
Retailer 5£182 GBP
Retailer 6£187 GBP
Retailer 3£222 GBP
Retailer 8£283 GBP
Retailer 9£291 GBP
Retailer 7£295 GBP
Retailer 11£363 GBP
Retailer 4£538 GBP
Retailer 12£569 GBP
Retailer 10£687 GBP
Retailer 2£768 GBP
Retailer 14£837 GBP
Brilliant Earth£881 GBP

36 data points across 14 retailers

15 retailers£149 GBP to £881 GBP

A
Cheapest Retailer
-
£149 GBP
$199 USD
Final sale: no returns
A
Retailer 2
-
£182 GBP
HK$1,900 HKD
View
Retailer 3
-
£187 GBP
$251 USD
View
Price last confirmed 16 days ago
B+
Retailer 4
-
£222 GBP
$298 USD
View
A
Retailer 5
-
£283 GBP
€361 EUR
View
A
Retailer 6
-
£291 GBP
View
A
Retailer 7
-
£295 GBP
View
A
Retailer 8
-
£363 GBP
$486 USD
View
B+
Retailer 9
-
£538 GBP
SGD 974 SGD
View
B+
Retailer 10
-
£561 GBP
View
B+
Retailer 11
-
£569 GBP
$762 USD
View
B+
Retailer 12
-
£687 GBP
$920 USD
View
B+
Retailer 13
-
£768 GBP
View
B
Retailer 14
-
£837 GBP
$1,122 USD
View
Most Expensive
B
Brilliant Earth
18876904A · Oct 31
£881 GBP
$1,180 USD
View
14 more retailers have this diamond
Prices start from £149 GBPSave up to £732 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
1.65ct Asscher
£149 GBP