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Round|Lab Grown|IGI

1.71ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG440012001

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440012001

Diamond specifications and retailer prices

From €850 EUR
$950 USD
As of October 30, 2026
Save €3,294 EUR (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €4,145 EUR at MOH London · As of October 27, 2026
View at MOH London

About this 1.71ct lab-grown round diamond

This 1.71ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG440012001 or 440012001. Listed at 10 retailers as of October 27, 2026, with prices from €850 to €4,145, a €3,294 spread on the same certified stone. MOH London lists it at €4,145. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440012001
Dimensions7.81 × 7.78 × 4.61 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.81 mm7.78 mm1.71 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440012001
Side View
Table 59.0%Crown 32.3°Girdle: ThickPavilion 40.3°Culet: NoneDepth 59.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €4,145 EUR|Low: €850 EUR|High: €4,194 EUR|Avg: €2,061 EUR|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2€850 EUR
Retailer 5€1,250 EUR
Retailer 8€1,359 EUR
Retailer 10€1,398 EUR
Retailer 6€1,449 EUR
Retailer 3€1,622 EUR
Retailer 12€1,985 EUR
Retailer 7€2,289 EUR
Retailer 11€2,630 EUR
Retailer 9€2,717 EUR
Retailer 4€3,244 EUR
MOH London€4,145 EUR

16 data points across 12 retailers

10 retailers€850 EUR to €4,145 EUR

A
Cheapest Retailer
-
€850 EUR
$950 USD
B+
Retailer 2
-
€1,250 EUR
$1,396 USD
View
B+
Retailer 3
-
€1,359 EUR
$1,518 USD
View
B+
Retailer 4
-
€1,398 EUR
$1,562 USD
View
Final sale: no returns
B+
Retailer 5
-
€1,449 EUR
$1,619 USD
View
Retailer 6
-
€1,449 EUR
$1,619 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
€2,289 EUR
$2,557 USD
View
B
Retailer 8
-
€2,630 EUR
$2,938 USD
View
B
Retailer 9
-
€2,717 EUR
$3,035 USD
View
Most Expensive
B
MOH London
LG440012001 · Oct 27
€4,145 EUR
£3,646 GBP
View
9 more retailers have this diamond
Prices start from €850 EURSave up to €3,294 EUR

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 Round
€850 EUR