Radiant|Lab Grown|IGI

1.61ct E IF Radiant Lab Grown Diamond

VG • E/IF • IGI LG681570182

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

Certificate IGI LG681570182

Diamond specifications and retailer prices

From £204 GBP
$274 USD
As of October 30, 2026
Save £862 GBP (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,735 GBP at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.61ct lab-grown radiant diamond

This 1.61ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG681570182 or 681570182. Listed at 21 retailers as of October 30, 2026, with a 421% 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

1.61
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681570182
Dimensions7.90 × 5.66 × 4.38 mm
L/W Ratio1.40
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
7.90 mm5.66 mm1.61 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681570182
Side View
Table 64.0%Crown 39.9°Girdle: STK-THKPavilion 39.6°Culet: NoneDepth 77.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £1,735 GBP|Low: £199 GBP|High: £1,754 GBP|Avg: £614 GBP|-1.1%
Rare Carat
Retailer 2
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Retailer 20
October 30, 2026
Retailer 18£204 GBP
Retailer 10£228 GBP
Retailer 9£237 GBP
Retailer 5£253 GBP
Retailer 7£253 GBP
Retailer 2£261 GBP
Retailer 17£373 GBP
Retailer 3£419 GBP
Retailer 16£435 GBP
Retailer 13£445 GBP
Retailer 19£452 GBP
Retailer 15£589 GBP
Retailer 20£778 GBP
Retailer 6£813 GBP
Retailer 12£843 GBP
Retailer 4£852 GBP
Retailer 11£990 GBP
Retailer 14£1,020 GBP
Retailer 8£1,066 GBP
Rare Carat£1,735 GBP

26 data points across 20 retailers

21 retailers£204 GBP to £1,066 GBP

A
Cheapest Retailer
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£204 GBP
$274 USD
A
Retailer 2
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£228 GBP
$305 USD
View
Final sale: no returns
A
Retailer 3
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£237 GBP
$317 USD
View
A
Retailer 4
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£253 GBP
$339 USD
View
A
Retailer 5
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£253 GBP
$339 USD
View
A
Retailer 6
-
£261 GBP
View
A
Retailer 7
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£373 GBP
$500 USD
View
A
Retailer 8
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£419 GBP
$562 USD
View
A
Retailer 9
-
£435 GBP
ZAR 9,415 ZAR
View
A
Retailer 10
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£445 GBP
View
A
Retailer 11
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£452 GBP
$605 USD
View
A
Retailer 12
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£589 GBP
A$1,214 AUD
View
B+
Retailer 13
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£778 GBP
$1,042 USD
View
B+
Retailer 14
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£813 GBP
$1,090 USD
View
B+
Retailer 15
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£843 GBP
$1,130 USD
View
B+
Retailer 16
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£852 GBP
$1,141 USD
View
B+
Retailer 17
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£990 GBP
View
B+
Retailer 18
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£1,000 GBP
$1,340 USD
View
B+
Retailer 19
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£1,020 GBP
View
B+
Retailer 20
-
£1,066 GBP
$1,428 USD
View
Most Expensive
Rare Carat
V81-08A_l_681570182 · Oct 18
£1,735 GBP
$2,325 USD
View
Price last confirmed 12 days ago
20 more retailers have this diamond
Prices start from £204 GBPSave up to £862 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
1.61ct Radiant
£204 GBP