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Emerald|Lab Grown|IGI

1.03ct D SI1 Emerald Lab Grown Diamond

EX • D/SI1 • IGI LG685512232

Shape and cutting style on the report: Emerald cut

Certificate IGI LG685512232

Diamond specifications and retailer prices

From £126 GBP
As of November 6, 2026
Save £689 GBP (85%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £814 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.03ct lab-grown emerald diamond

This 1.03ct lab-grown emerald 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 LG685512232 or 685512232. Listed at 17 retailers as of November 4, 2026, with prices from £126 to £814, a £689 spread on the same certified stone. Reve Diamonds lists it at £814. 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

1.03
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.3°
Pavilion angle42.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685512232
Dimensions6.88 × 4.72 × 3.25 mm
L/W Ratio1.46
Culet sizeLarge
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
6.88 mm4.72 mm1.03 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685512232
Side View
Table 65.0%Crown 30.3°Girdle: MED-STKPavilion 42.7°Culet: LargeDepth 68.9%

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: Nov 6
Current: £275 GBP|Low: £120 GBP|High: £814 GBP|Avg: £353 GBP|+4.5%
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
Reve Diamonds
November 6, 2026
Retailer 2£126 GBP
Retailer 3£140 GBP
Retailer 9£146 GBP
Retailer 5£156 GBP
Retailer 12£156 GBP
Retailer 1£275 GBP
Retailer 8£279 GBP
Retailer 11£280 GBP
Retailer 10£336 GBP
Retailer 7£415 GBP
Retailer 13£502 GBP
Retailer 4£542 GBP
Retailer 6£729 GBP
Reve Diamonds£814 GBP

46 data points across 14 retailers

17 retailers£126 GBP to £814 GBP

Retailer 1
-
£125 GBP
Price last confirmed 45 days ago
A
Retailer 2
-
£126 GBP
View
A
Retailer 3
-
£140 GBP
View
Final sale: no returns
A
Retailer 4
-
£146 GBP
View
A
Retailer 5
-
£156 GBP
View
Retailer 6
-
£156 GBP
View
Price last confirmed 12 days ago
B+
Retailer 7
-
£275 GBP
View
Retailer 8
-
£279 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£280 GBP
View
B+
Retailer 10
-
£336 GBP
View
Retailer 11
-
£351 GBP
View
Price last confirmed 81 days ago
B
Retailer 12
-
£415 GBP
View
B
Retailer 13
-
£502 GBP
View
B
Retailer 14
-
£530 GBP
View
B
Retailer 15
-
£542 GBP
View
B
Retailer 16
-
£729 GBP
View
Most Expensive
B
Reve Diamonds
1D5216E34 · Nov 4
£814 GBP
$1,096 USD
View
16 more retailers have this diamond
Prices start from £126 GBPSave up to £689 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 Emerald
£126 GBP