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Emerald|Lab Grown|IGI

1.71ct D SI1 Emerald Lab Grown Diamond

ID • D/SI1 • IGI LG534250926

Shape and cutting style on the report: Emerald cut

Certificate IGI LG534250926

Diamond specifications and retailer prices

From £208 GBP
$277 USD
As of October 28, 2026
Save £1,527 GBP (88%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,735 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.71ct lab-grown emerald diamond

This 1.71ct lab-grown emerald sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG534250926 or 534250926. Listed at 10 retailers as of October 28, 2026, with prices from £208 to £1,735, a £1,527 spread on the same certified stone. Brilliant Earth lists it at £1,735. 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

1.71
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.7°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG534250926
Dimensions8.05 × 5.72 × 3.77 mm
L/W Ratio1.41
Culet sizeLong
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
8.05 mm5.72 mm1.71 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG534250926
Side View
Table 64.5%Crown 27.7°Girdle: MediumPavilion 38.2°Culet: LNGDepth 65.9%

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: Oct 28
Current: £1,735 GBP|Low: £113 GBP|High: £1,802 GBP|Avg: £558 GBP|-3.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 3£113 GBP
Retailer 10£208 GBP
Retailer 11£238 GBP
Retailer 8£276 GBP
Retailer 2£316 GBP
Retailer 9£395 GBP
Retailer 5£568 GBP
Retailer 7£645 GBP
Retailer 4£780 GBP
Retailer 6£830 GBP
Brilliant Earth£1,735 GBP

20 data points across 11 retailers

10 retailers£208 GBP to £1,735 GBP

A
Cheapest Retailer
-
£208 GBP
$277 USD
B+
Retailer 2
-
£238 GBP
$317 USD
View
A
Retailer 3
-
£276 GBP
$367 USD
View
A
Retailer 4
-
£316 GBP
€401 EUR
View
A
Retailer 5
-
£395 GBP
$527 USD
View
B+
Retailer 6
-
£568 GBP
$756 USD
View
Price last confirmed 10 days ago
B+
Retailer 7
-
£645 GBP
$859 USD
View
B
Retailer 8
-
£780 GBP
View
B
Retailer 9
-
£1,367 GBP
$1,820 USD
View
Most Expensive
C
Brilliant Earth
16301472A · Oct 29
£1,735 GBP
$2,310 USD
View
9 more retailers have this diamond
Prices start from £208 GBPSave up to £1,527 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
1.71ct Emerald
£208 GBP