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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 $2,819 NZD
$1,589 USD
As of November 2, 2026
Save $18,543 NZD (87%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $21,363 NZD at Do Amore Diamonds · As of November 2, 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 November 2, 2026, with prices from $2,819 to $21,363, a $18,543 spread on the same certified stone. Do Amore Diamonds lists it at $21,363. 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: Nov 2
Current: $5,425 NZD|Low: $2,983 NZD|High: $11,510 NZD|Avg: $6,807 NZD|-2.5%
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
November 2, 2026
Retailer 5$3,107 NZD
Retailer 2$3,380 NZD
Retailer 3$3,604 NZD
Retailer 4$3,604 NZD
Retailer 15$3,903 NZD
Retailer 10$4,969 NZD
Retailer 1$5,425 NZD
Retailer 14$6,061 NZD
Retailer 13$7,399 NZD
Retailer 6$7,456 NZD
Retailer 11$8,304 NZD
Retailer 9$9,441 NZD
Retailer 7$9,709 NZD
Retailer 12$10,261 NZD
Retailer 8$11,359 NZD

37 data points across 15 retailers

24 retailers$2,819 NZD to $21,363 NZD

A
Cheapest Retailer
-
$2,819 NZD
$1,589 USD
A
Retailer 2
-
$3,107 NZD
$1,751 USD
View
A
Retailer 3
-
$3,380 NZD
$1,905 USD
View
A
Retailer 4
-
$3,478 NZD
$1,960 USD
View
Final sale: no returns
A
Retailer 5
-
$3,604 NZD
$2,031 USD
View
Retailer 6
-
$3,604 NZD
$2,031 USD
View
Price last confirmed 20 days ago
A
Retailer 7
-
$3,621 NZD
$2,041 USD
View
A
Retailer 8
-
$3,903 NZD
$2,200 USD
View
B+
Retailer 9
-
$4,969 NZD
£2,205 GBP
View
B+
Retailer 10
-
$5,064 NZD
$2,854 USD
View
B+
Retailer 11
-
$5,425 NZD
£2,407 GBP
View
B+
Retailer 12
-
$6,061 NZD
$3,416 USD
View
Retailer 13
-
$6,242 NZD
$3,518 USD
View
Price last confirmed 10 days ago
Retailer 14
-
$7,399 NZD
$4,170 USD
View
Price last confirmed 11 days ago
B
Retailer 15
-
$7,456 NZD
$4,202 USD
View
B
Retailer 16
-
$7,544 NZD
£3,348 GBP
View
B
Retailer 17
-
$8,304 NZD
$4,680 USD
View
B
Retailer 18
-
$9,441 NZD
A$8,186 AUD
View
B
Retailer 19
-
$9,709 NZD
$5,472 USD
View
B
Retailer 20
-
$10,261 NZD
ZAR 93,431 ZAR
View
B
Retailer 21
-
$10,771 NZD
$6,071 USD
View
B
Retailer 22
-
$11,359 NZD
£5,041 GBP
View
B
Retailer 23
-
$13,925 NZD
$7,848 USD
View
Most Expensive
B
Do Amore Diamonds
27-B880BE45E · Nov 2
$21,363 NZD
$12,040 USD
View
23 more retailers have this diamond
Prices start from $2,819 NZDSave up to $18,543 NZD

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
$2,819 NZD