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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 $1,230 USD
As of October 29, 2026
Save $3,400 USD (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,630 USD 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 $1,230 to $4,630, a $3,400 spread on the same certified stone. MOH London lists it at $4,630. 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
Color
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 29
Current: $4,630 USD|Low: $1,230 USD|High: $4,685 USD|Avg: $2,533 USD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 25, 2026
Retailer 2$1,230 USD
Retailer 4$1,562 USD
Retailer 7$1,812 USD
Retailer 6$2,218 USD
Retailer 3$2,557 USD
Retailer 5$2,938 USD
Retailer 8$3,624 USD
MOH London$4,630 USD

11 data points across 8 retailers

10 retailers$1,230 USD to $4,630 USD

A
Cheapest Retailer
-
$1,230 USD
B+
Retailer 2
-
$1,396 USD
View
B+
Retailer 3
-
$1,518 USD
View
B+
Retailer 4
-
$1,562 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,619 USD
View
Retailer 6
-
$1,619 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
$2,557 USD
View
B
Retailer 8
-
$2,938 USD
View
B
Retailer 9
-
$3,035 USD
View
Most Expensive
B
MOH London
LG440012001 · Oct 27
$4,630 USD
£3,646 GBP
View
9 more retailers have this diamond
Prices start from $1,230 USDSave up to $3,400 USD

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
$1,230 USD