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Radiant|Lab Grown|IGI

1.71ct F SI1 Radiant Lab Grown Diamond

GD • F/SI1 • IGI LG611390075

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG611390075

Diamond specifications and retailer prices

From $182 USD
As of October 27, 2026
Save $1,568 USD (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,750 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.71ct lab-grown radiant diamond

This 1.71ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG611390075 or 611390075. Listed at 10 retailers as of October 27, 2026, with prices from $182 to $1,750, a $1,568 spread on the same certified stone. Do Amore Diamonds lists it at $1,750. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.71
Carat
F
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.4°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG611390075
Dimensions8.50 × 5.87 × 3.95 mm
L/W Ratio1.45
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
8.50 mm5.87 mm1.71 ctF / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG611390075
Side View
Table 64.0%Crown 43.4°Girdle: MED-STKPavilion 35.1°Culet: NoneDepth 67.3%

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 27
Current: $1,750 USD|Low: $146 USD|High: $1,820 USD|Avg: $810 USD|-3.8%
Do Amore Diamonds
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
Retailer 15
October 29, 2026
Retailer 11$182 USD
Retailer 8$211 USD
Retailer 14$212 USD
Retailer 10$399 USD
Retailer 3$425 USD
Retailer 4$541 USD
Retailer 7$677 USD
Retailer 9$767 USD
Retailer 15$779 USD
Retailer 12$801 USD
Retailer 2$1,171 USD
Retailer 6$1,200 USD
Retailer 13$1,250 USD
Retailer 5$1,420 USD
Do Amore Diamonds$1,750 USD

20 data points across 15 retailers

10 retailers$182 USD to $1,750 USD

A
Cheapest Retailer
-
$182 USD
A
Retailer 2
-
$211 USD
View
B+
Retailer 3
-
$212 USD
View
Final sale: no returns
B+
Retailer 4
-
$399 USD
View
Retailer 5
-
$767 USD
View
Price last confirmed 7 days ago
B
Retailer 6
-
$801 USD
View
B
Retailer 7
-
$1,171 USD
£922 GBP
View
Retailer 8
-
$1,250 USD
View
Price last confirmed 7 days ago
B
Retailer 9
-
$1,420 USD
View
Most Expensive
B
Do Amore Diamonds
27-45AE36F9B · Oct 29
$1,750 USD
View
9 more retailers have this diamond
Prices start from $182 USDSave up to $1,568 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 Radiant
$182 USD