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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 $960 USD
As of October 31, 2026
Save $5,064 USD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,024 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 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 $960 to $6,024, a $5,064 spread on the same certified stone. MOH London lists it at $6,024. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $6,024 USD|Low: $960 USD|High: $6,063 USD|Avg: $2,807 USD|-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$960 USD
Retailer 4$1,808 USD
Retailer 7$2,025 USD
Retailer 5$2,098 USD
Retailer 10$2,234 USD
Retailer 8$2,265 USD
Retailer 9$2,788 USD
Retailer 6$3,291 USD
Retailer 3$3,529 USD
MOH London$6,024 USD

13 data points across 10 retailers

11 retailers$960 USD to $6,024 USD

A
Cheapest Retailer
-
$960 USD
B+
Retailer 2
-
$1,808 USD
View
B+
Retailer 3
-
$1,968 USD
View
B+
Retailer 4
-
$2,025 USD
View
Final sale: no returns
B
Retailer 5
-
$2,098 USD
View
Retailer 6
-
$2,098 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
$2,265 USD
View
B
Retailer 8
-
$3,291 USD
View
B
Retailer 9
-
$3,529 USD
View
B
Retailer 10
-
$3,932 USD
View
Most Expensive
B
MOH London
LG487199056 · Oct 29
$6,024 USD
£4,743 GBP
View
10 more retailers have this diamond
Prices start from $960 USDSave up to $5,064 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
$960 USD