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Radiant|Lab Grown|IGI

1.71ct D FL Radiant Lab Grown Diamond

VG • D/FL • IGI LG800677445

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

Certificate IGI LG800677445

Diamond specifications and retailer prices

From £435 GBP
$583 USD
As of October 30, 2026
Save £3,431 GBP (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,866 GBP 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG800677445 or 800677445. Listed at 14 retailers as of October 29, 2026, with prices from £435 to £3,866, a £3,431 spread on the same certified stone. Do Amore Diamonds lists it at £3,866. 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
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.9°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800677445
Dimensions8.21 × 5.84 × 4.15 mm
L/W Ratio1.41
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.21 mm5.84 mm1.71 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800677445
Side View
Table 60.0%Crown 42.9°Girdle: Slightly ThickPavilion 36.4°Culet: NoneDepth 71.1%

Caratlytics Score

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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 30
Current: £3,866 GBP|Low: £413 GBP|High: £4,582 GBP|Avg: £1,651 GBP|-15.6%
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
October 30, 2026
Retailer 8£435 GBP
Retailer 13£487 GBP
Retailer 6£578 GBP
Retailer 10£637 GBP
Retailer 4£649 GBP
Retailer 5£805 GBP
Retailer 9£829 GBP
Retailer 14£953 GBP
Retailer 11£1,339 GBP
Retailer 12£1,567 GBP
Retailer 7£2,360 GBP
Retailer 2£2,836 GBP
Retailer 3£3,026 GBP
Do Amore Diamonds£3,866 GBP

32 data points across 14 retailers

14 retailers£435 GBP to £3,866 GBP

A
Cheapest Retailer
-
£435 GBP
$583 USD
A
Retailer 2
-
£487 GBP
$653 USD
View
A
Retailer 3
-
£578 GBP
$774 USD
View
Final sale: no returns
A
Retailer 4
-
£637 GBP
$853 USD
View
A
Retailer 5
-
£649 GBP
$870 USD
View
B+
Retailer 6
-
£805 GBP
$1,079 USD
View
A
Retailer 7
-
£829 GBP
$1,111 USD
View
Retailer 8
-
£953 GBP
€1,216 EUR
View
Price last confirmed 7 days ago
B+
Retailer 9
-
£1,339 GBP
$1,794 USD
View
B
Retailer 10
-
£1,567 GBP
$2,099 USD
View
B
Retailer 11
-
£2,360 GBP
View
B
Retailer 12
-
£2,836 GBP
$3,800 USD
View
B
Retailer 13
-
£3,026 GBP
$4,055 USD
View
Most Expensive
B
Do Amore Diamonds
27-48CE8E38E · Oct 29
£3,866 GBP
$5,180 USD
View
13 more retailers have this diamond
Prices start from £435 GBPSave up to £3,431 GBP

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
£435 GBP