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Asscher|Lab Grown|IGI

1.00ct D SI1 Asscher Lab Grown Diamond

ID • D/SI1 • IGI LG689560730

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG689560730

Diamond specifications and retailer prices

From £168 GBP
$225 USD
As of October 30, 2026
Save £783 GBP (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £951 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 LG689560730 or 689560730. Listed at 15 retailers as of October 30, 2026, with prices from £168 to £951, a £783 spread on the same certified stone. Reve Diamonds lists it at £951. 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
SymmetryVery Good
FluorescenceNone
Crown angle30.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689560730
Dimensions5.56 × 5.49 × 3.58 mm
L/W Ratio1.01
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
5.56 mm5.49 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG689560730
Side View
Table 64.0%Crown 30.7°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 65.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £389 GBP|Low: £132 GBP|High: £951 GBP|Avg: £458 GBP|+5.7%
Retailer 1
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
Reve Diamonds
October 30, 2026
Retailer 10£168 GBP
Retailer 5£188 GBP
Retailer 9£195 GBP
Retailer 4£208 GBP
Retailer 14£208 GBP
Retailer 2£355 GBP
Retailer 12£382 GBP
Retailer 1£389 GBP
Retailer 7£393 GBP
Retailer 3£419 GBP
Retailer 13£573 GBP
Retailer 11£669 GBP
Retailer 6£709 GBP
Retailer 8£836 GBP
Reve Diamonds£951 GBP

44 data points across 15 retailers

15 retailers£168 GBP to £951 GBP

A
Cheapest Retailer
-
£168 GBP
$225 USD
A
Retailer 2
-
£188 GBP
$252 USD
View
Final sale: no returns
A
Retailer 3
-
£195 GBP
$261 USD
View
A
Retailer 4
-
£208 GBP
$279 USD
View
A
Retailer 5
-
£208 GBP
$279 USD
View
B
Retailer 6
-
£355 GBP
$475 USD
View
B+
Retailer 7
-
£382 GBP
$512 USD
View
B+
Retailer 8
-
£389 GBP
View
B+
Retailer 9
-
£393 GBP
€502 EUR
View
Retailer 10
-
£419 GBP
View
Price last confirmed 15 days ago
B
Retailer 11
-
£573 GBP
$768 USD
View
B
Retailer 12
-
£669 GBP
$897 USD
View
B
Retailer 13
-
£709 GBP
$950 USD
View
B
Retailer 14
-
£836 GBP
View
Most Expensive
B
Reve Diamonds
13F4456EE · Oct 30
£951 GBP
$1,274 USD
View
14 more retailers have this diamond
Prices start from £168 GBPSave up to £783 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
£168 GBP