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Asscher|Lab Grown|IGI

1.03ct D SI1 Asscher Lab Grown Diamond

GD • D/SI1 • IGI LG687546357

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG687546357

Diamond specifications and retailer prices

From £134 GBP
As of November 4, 2026
Save £708 GBP (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £842 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.03ct lab-grown asscher diamond

This 1.03ct lab-grown asscher sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG687546357 or 687546357. Listed at 16 retailers as of November 4, 2026, with prices from £134 to £842, a £708 spread on the same certified stone. Reve Diamonds lists it at £842. 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

1.03
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle44.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687546357
Dimensions5.61 × 5.57 × 3.68 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
5.61 mm5.57 mm1.03 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687546357
Side View
Table 59.0%Crown 32.5°Girdle: Slightly ThickPavilion 44.3°Culet: NoneDepth 66.1%

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 4
Current: £297 GBP|Low: £134 GBP|High: £842 GBP|Avg: £412 GBP|+4.4%
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
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Retailer 15
Reve Diamonds
November 6, 2026
Retailer 9£134 GBP
Retailer 5£151 GBP
Retailer 11£156 GBP
Retailer 12£167 GBP
Retailer 3£295 GBP
Retailer 1£297 GBP
Retailer 15£317 GBP
Retailer 14£321 GBP
Retailer 4£345 GBP
Retailer 2£379 GBP
Retailer 13£447 GBP
Retailer 7£498 GBP
Retailer 10£537 GBP
Retailer 6£577 GBP
Retailer 8£778 GBP
Reve Diamonds£842 GBP

45 data points across 16 retailers

16 retailers£134 GBP to £842 GBP

A
Cheapest Retailer
-
£134 GBP
B+
Retailer 2
-
£151 GBP
View
Final sale: no returns
B+
Retailer 3
-
£156 GBP
View
B+
Retailer 4
-
£167 GBP
View
B+
Retailer 5
-
£295 GBP
View
B+
Retailer 6
-
£297 GBP
View
B+
Retailer 7
-
£317 GBP
View
Retailer 8
-
£321 GBP
View
Price last confirmed 8 days ago
B
Retailer 9
-
£345 GBP
View
B
Retailer 10
-
£379 GBP
View
B
Retailer 11
-
£447 GBP
View
B
Retailer 12
-
£498 GBP
View
B
Retailer 13
-
£537 GBP
View
B
Retailer 14
-
£577 GBP
View
B
Retailer 15
-
£778 GBP
View
Most Expensive
C
Reve Diamonds
8D038925B · Nov 6
£842 GBP
$1,134 USD
View
15 more retailers have this diamond
Prices start from £134 GBPSave up to £708 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
1.03ct Asscher
£134 GBP