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Radiant|Lab Grown|IGI

2.57ct G IF Radiant Lab Grown Diamond

EX • G/IF • IGI LG661408024

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

Certificate IGI LG661408024

Diamond specifications and retailer prices

From £1,186 GBP
$1,589 USD
As of October 31, 2026
Save £7,800 GBP (87%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £8,986 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 2.57ct lab-grown radiant diamond

This 2.57ct lab-grown radiant sits in the two to three carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG661408024 or 661408024. Listed at 24 retailers as of October 31, 2026, with prices from £1,186 to £8,986, a £7,800 spread on the same certified stone. Do Amore Diamonds lists it at £8,986. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.57
Carat
G
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG661408024
Dimensions9.75 × 6.75 × 4.49 mm
L/W Ratio1.44
Culet sizePointed
Top View
9.75 mm6.75 mm2.57 ctG / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG661408024
Side View
Table 65.0%Crown 42.7°Girdle: MediumPavilion 34.9°Culet: NoneDepth 66.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £3,971 GBP|Low: £1,255 GBP|High: £4,842 GBP|Avg: £2,822 GBP|-0.1%
Retailer 1
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
Retailer 16
November 1, 2026
Retailer 5£1,307 GBP
Retailer 2£1,422 GBP
Retailer 3£1,516 GBP
Retailer 4£1,516 GBP
Retailer 16£1,642 GBP
Retailer 9£2,090 GBP
Retailer 8£2,130 GBP
Retailer 10£2,301 GBP
Retailer 15£2,549 GBP
Retailer 14£3,112 GBP
Retailer 6£3,136 GBP
Retailer 11£3,493 GBP
Retailer 1£3,971 GBP
Retailer 7£4,084 GBP
Retailer 12£4,316 GBP
Retailer 13£4,784 GBP

36 data points across 16 retailers

24 retailers£1,186 GBP to £8,986 GBP

A
Cheapest Retailer
-
£1,186 GBP
$1,589 USD
A
Retailer 2
-
£1,307 GBP
$1,751 USD
View
A
Retailer 3
-
£1,422 GBP
$1,905 USD
View
A
Retailer 4
-
£1,463 GBP
$1,960 USD
View
Final sale: no returns
A
Retailer 5
-
£1,516 GBP
$2,031 USD
View
Retailer 6
-
£1,516 GBP
$2,031 USD
View
Price last confirmed 19 days ago
A
Retailer 7
-
£1,523 GBP
$2,041 USD
View
A
Retailer 8
-
£1,642 GBP
$2,200 USD
View
B+
Retailer 9
-
£2,090 GBP
View
B+
Retailer 10
-
£2,130 GBP
$2,854 USD
View
B+
Retailer 11
-
£2,301 GBP
View
B+
Retailer 12
-
£2,549 GBP
$3,416 USD
View
Retailer 13
-
£2,626 GBP
$3,518 USD
View
Price last confirmed 9 days ago
Retailer 14
-
£3,112 GBP
$4,170 USD
View
Price last confirmed 11 days ago
B
Retailer 15
-
£3,136 GBP
$4,202 USD
View
B
Retailer 16
-
£3,173 GBP
View
B
Retailer 17
-
£3,493 GBP
$4,680 USD
View
B
Retailer 18
-
£3,971 GBP
A$8,186 AUD
View
B
Retailer 19
-
£4,084 GBP
$5,472 USD
View
B
Retailer 20
-
£4,316 GBP
ZAR 93,431 ZAR
View
B
Retailer 21
-
£4,531 GBP
$6,071 USD
View
B
Retailer 22
-
£4,784 GBP
View
B
Retailer 23
-
£5,857 GBP
$7,848 USD
View
Most Expensive
B
Do Amore Diamonds
27-B880BE45E · Oct 31
£8,986 GBP
$12,040 USD
View
23 more retailers have this diamond
Prices start from £1,186 GBPSave up to £7,800 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
2.57ct Radiant
£1,186 GBP