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Round|Lab Grown|IGI

1.71ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG447099869

Shape and cutting style on the report: Round brilliant

Certificate IGI LG447099869

Diamond specifications and retailer prices

From $980 USD
As of October 30, 2026
Save $4,189 USD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,169 USD 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447099869 or 447099869. Listed at 12 retailers as of October 29, 2026, with prices from $980 to $5,169, a $4,189 spread on the same certified stone. MOH London lists it at $5,169. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447099869
Dimensions7.66 × 7.61 × 4.73 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.66 mm7.61 mm1.71 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447099869
Side View
Table 56.0%Crown 35.9°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.0%

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: $5,169 USD|Low: $980 USD|High: $5,203 USD|Avg: $2,367 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 2$980 USD
Retailer 9$1,552 USD
Retailer 12$1,688 USD
Retailer 14$1,737 USD
Retailer 3$1,800 USD
Retailer 10$1,800 USD
Retailer 4$1,970 USD
Retailer 6$2,018 USD
Retailer 5$2,434 USD
Retailer 11$2,833 USD
Retailer 8$3,183 USD
Retailer 7$3,265 USD
Retailer 13$3,374 USD
MOH London$5,169 USD

22 data points across 14 retailers

12 retailers$980 USD to $5,169 USD

A
Cheapest Retailer
-
$980 USD
B+
Retailer 2
-
$1,552 USD
View
B+
Retailer 3
-
$1,688 USD
View
B+
Retailer 4
-
$1,737 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,800 USD
View
Retailer 6
-
$1,800 USD
View
Price last confirmed 18 days ago
B+
Retailer 7
-
$1,970 USD
View
B
Retailer 8
-
$2,833 USD
View
B
Retailer 9
-
$3,183 USD
View
B
Retailer 10
-
$3,265 USD
£2,571 GBP
View
B
Retailer 11
-
$3,374 USD
View
Most Expensive
B
MOH London
LG447099869 · Oct 29
$5,169 USD
£4,070 GBP
View
11 more retailers have this diamond
Prices start from $980 USDSave up to $4,189 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
$980 USD