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Round|Lab Grown|IGI

1.71ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG487199056

Shape and cutting style on the report: Round brilliant

Certificate IGI LG487199056

Diamond specifications and retailer prices

From €859 EUR
$960 USD
As of October 31, 2026
Save €4,532 EUR (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €5,392 EUR at MOH London · As of October 29, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG487199056 or 487199056. Listed at 11 retailers as of October 29, 2026, with prices from €859 to €5,392, a €4,532 spread on the same certified stone. MOH London lists it at €5,392. 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
H
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487199056
Dimensions7.70 × 7.67 × 4.72 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.70 mm7.67 mm1.71 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487199056
Side View
Table 55.5%Crown 35.5°Girdle: MediumPavilion 40.2°Culet: NoneDepth 61.5%

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 31
Current: €5,392 EUR|Low: €859 EUR|High: €5,427 EUR|Avg: €2,513 EUR|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2€859 EUR
Retailer 4€1,618 EUR
Retailer 7€1,813 EUR
Retailer 5€1,878 EUR
Retailer 10€2,000 EUR
Retailer 8€2,027 EUR
Retailer 9€2,496 EUR
Retailer 6€2,946 EUR
Retailer 3€3,159 EUR
MOH London€5,392 EUR

13 data points across 10 retailers

11 retailers€859 EUR to €5,392 EUR

A
Cheapest Retailer
-
€859 EUR
$960 USD
B+
Retailer 2
-
€1,618 EUR
$1,808 USD
View
B+
Retailer 3
-
€1,762 EUR
$1,968 USD
View
B+
Retailer 4
-
€1,813 EUR
$2,025 USD
View
Final sale: no returns
B
Retailer 5
-
€1,878 EUR
$2,098 USD
View
Retailer 6
-
€1,878 EUR
$2,098 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
€2,027 EUR
$2,265 USD
View
B
Retailer 8
-
€2,946 EUR
$3,291 USD
View
B
Retailer 9
-
€3,159 EUR
$3,529 USD
View
B
Retailer 10
-
€3,519 EUR
$3,932 USD
View
Most Expensive
B
MOH London
LG487199056 · Oct 29
€5,392 EUR
£4,743 GBP
View
10 more retailers have this diamond
Prices start from €859 EURSave up to €4,532 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
€859 EUR