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Asscher|Lab Grown|IGI

1.00ct D SI1 Asscher Lab Grown Diamond

ID • D/SI1 • IGI LG689561367

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG689561367

Diamond specifications and retailer prices

From £131 GBP
$175 USD
As of October 30, 2026
Save £701 GBP (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £831 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1ct lab-grown asscher diamond

This 1ct lab-grown asscher sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG689561367 or 689561367. Listed at 17 retailers as of October 30, 2026, with prices from £131 to £831, a £701 spread on the same certified stone. Reve Diamonds lists it at £831. 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

1.00
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689561367
Dimensions5.59 × 5.57 × 3.59 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
5.59 mm5.57 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689561367
Side View
Table 62.0%Crown 33.7°Girdle: MediumPavilion 39.5°Culet: NoneDepth 64.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £290 GBP|Low: £102 GBP|High: £831 GBP|Avg: £383 GBP|+5.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 9
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 16
Reve Diamonds
October 31, 2026
Retailer 15£131 GBP
Retailer 9£146 GBP
Retailer 13£152 GBP
Retailer 5£162 GBP
Retailer 6£162 GBP
Retailer 4£288 GBP
Retailer 1£290 GBP
Retailer 12£307 GBP
Retailer 10£313 GBP
Retailer 2£341 GBP
Retailer 14£369 GBP
Retailer 3£428 GBP
Retailer 8£485 GBP
Retailer 16£520 GBP
Retailer 7£561 GBP
Retailer 11£761 GBP
Reve Diamonds£831 GBP

45 data points across 17 retailers

17 retailers£131 GBP to £831 GBP

A
Cheapest Retailer
-
£131 GBP
$175 USD
A
Retailer 2
-
£146 GBP
$195 USD
View
Final sale: no returns
A
Retailer 3
-
£152 GBP
$203 USD
View
A
Retailer 4
-
£162 GBP
$217 USD
View
A
Retailer 5
-
£162 GBP
$217 USD
View
B+
Retailer 6
-
£288 GBP
$386 USD
View
B+
Retailer 7
-
£290 GBP
View
B+
Retailer 8
-
£307 GBP
View
B+
Retailer 9
-
£313 GBP
€399 EUR
View
B+
Retailer 10
-
£341 GBP
$457 USD
View
B+
Retailer 11
-
£369 GBP
$495 USD
View
B
Retailer 12
-
£428 GBP
$574 USD
View
B
Retailer 13
-
£485 GBP
$650 USD
View
B
Retailer 14
-
£520 GBP
$697 USD
View
B
Retailer 15
-
£561 GBP
$752 USD
View
B
Retailer 16
-
£761 GBP
View
Most Expensive
B
Reve Diamonds
C4A7FCF63 · Oct 30
£831 GBP
$1,114 USD
View
16 more retailers have this diamond
Prices start from £131 GBPSave up to £701 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
1.00ct Asscher
£131 GBP