Radiant|Lab Grown|IGI

1.70ct D IF Radiant Lab Grown Diamond

VG • D/IF • IGI LG623464285

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

Certificate IGI LG623464285

Diamond specifications and retailer prices

From £258 GBP
$346 USD
As of October 30, 2026
Save £996 GBP (79%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,314 GBP at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.7ct lab-grown radiant diamond

This 1.7ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG623464285 or 623464285. Listed at 20 retailers as of October 25, 2026, with a 386% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.70
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623464285
Dimensions8.49 × 5.82 × 4.03 mm
L/W Ratio1.46
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
8.49 mm5.82 mm1.70 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623464285
Side View
Table 64.0%Crown 42.7°Girdle: Slightly ThickPavilion 34°Culet: NoneDepth 69.2%

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: £2,314 GBP|Low: £258 GBP|High: £2,373 GBP|Avg: £784 GBP|-2.5%
Rare Carat
Retailer 2
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October 30, 2026
Retailer 9£258 GBP
Retailer 7£288 GBP
Retailer 17£300 GBP
Retailer 4£320 GBP
Retailer 8£320 GBP
Retailer 15£433 GBP
Retailer 3£516 GBP
Retailer 6£516 GBP
Retailer 19£535 GBP
Retailer 14£551 GBP
Retailer 2£576 GBP
Retailer 13£744 GBP
Retailer 18£798 GBP
Retailer 20£943 GBP
Retailer 11£1,030 GBP
Retailer 12£1,061 GBP
Retailer 10£1,211 GBP
Retailer 5£1,239 GBP
Retailer 16£1,254 GBP
Rare Carat£2,314 GBP

35 data points across 20 retailers

20 retailers£258 GBP to £1,254 GBP

A
Cheapest Retailer
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£258 GBP
$346 USD
A
Retailer 2
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£288 GBP
$386 USD
View
Final sale: no returns
A
Retailer 3
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£300 GBP
$402 USD
View
A
Retailer 4
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£320 GBP
$429 USD
View
A
Retailer 5
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£320 GBP
$429 USD
View
A
Retailer 6
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£433 GBP
$580 USD
View
A
Retailer 7
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£516 GBP
$691 USD
View
A
Retailer 8
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£516 GBP
$692 USD
View
Retailer 9
-
£535 GBP
€683 EUR
View
Price last confirmed 7 days ago
A
Retailer 10
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£551 GBP
ZAR 11,918 ZAR
View
A
Retailer 11
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£576 GBP
View
A
Retailer 12
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£744 GBP
A$1,533 AUD
View
A
Retailer 13
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£798 GBP
$1,069 USD
View
B+
Retailer 14
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£943 GBP
$1,263 USD
View
B+
Retailer 15
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£1,030 GBP
$1,380 USD
View
B+
Retailer 16
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£1,061 GBP
$1,422 USD
View
B+
Retailer 17
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£1,211 GBP
$1,622 USD
View
B+
Retailer 18
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£1,239 GBP
$1,660 USD
View
B+
Retailer 19
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£1,254 GBP
View
Most Expensive
Rare Carat
165-13_l_623464285 · Oct 18
£2,314 GBP
$3,100 USD
View
Price last confirmed 12 days ago
19 more retailers have this diamond
Prices start from £258 GBPSave up to £996 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
1.70ct Radiant
£258 GBP