Radiant|Lab Grown|IGI

4.51ct D VS1 Radiant Lab Grown Diamond

VG • D/VS1 • IGI LG765631503

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

Certificate IGI LG765631503

Diamond specifications and retailer prices

From $1,618 NZD
$912 USD
As of October 30, 2026
Save $8,921 NZD (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $12,889 NZD at Queensmith · As of October 10, 2026
View at Queensmith

About this 4.51ct lab-grown radiant diamond

This 4.51ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG765631503 or 765631503. Listed at 23 retailers as of October 30, 2026, with a 551% 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

4.51
Carat
D
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG765631503
Dimensions11.25 × 8.02 × 5.71 mm
L/W Ratio1.40
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.25 mm8.02 mm4.51 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG765631503
Side View
Table 70.0%Crown 39.7°Girdle: Slightly ThickPavilion 41.3°Culet: NoneDepth 71.2%

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: $2,867 NZD|Low: $1,618 NZD|High: $18,435 NZD|Avg: $5,261 NZD|-5.9%
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 31, 2026
Retailer 6$1,618 NZD
Retailer 21$1,762 NZD
Retailer 17$1,793 NZD
Retailer 7$2,191 NZD
Retailer 5$2,465 NZD
Retailer 19$2,845 NZD
Retailer 1$2,867 NZD
Retailer 16$3,011 NZD
Retailer 4$3,808 NZD
Retailer 18$3,996 NZD
Retailer 20$4,019 NZD
Retailer 2$4,494 NZD
Retailer 10$5,192 NZD
Retailer 3$5,279 NZD
Retailer 11$5,864 NZD
Retailer 12$6,354 NZD
Retailer 13$6,402 NZD
Retailer 14$6,407 NZD
Retailer 9$6,526 NZD
Retailer 8$8,960 NZD
Retailer 15$10,539 NZD

33 data points across 21 retailers

23 retailers$1,618 NZD to $10,539 NZD

A
Cheapest Retailer
-
$1,618 NZD
$912 USD
A
Retailer 2
-
$1,762 NZD
$993 USD
View
A
Retailer 3
-
$1,793 NZD
£796 GBP
View
Retailer 4
-
$1,922 NZD
$1,083 USD
View
Price last confirmed 36 days ago
A
Retailer 5
-
$2,191 NZD
$1,235 USD
View
A
Retailer 6
-
$2,465 NZD
$1,389 USD
View
Retailer 7
-
$2,845 NZD
€1,527 EUR
View
Price last confirmed 8 days ago
A
Retailer 8
-
$2,867 NZD
£1,272 GBP
View
A
Retailer 9
-
$3,011 NZD
$1,697 USD
View
B+
Retailer 10
-
$3,808 NZD
$2,146 USD
View
B+
Retailer 11
-
$3,996 NZD
ZAR 36,386 ZAR
View
Retailer 12
-
$4,019 NZD
A$3,485 AUD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$4,494 NZD
$2,533 USD
View
B+
Retailer 14
-
$5,192 NZD
£2,304 GBP
View
B+
Retailer 15
-
$5,279 NZD
$2,975 USD
View
B
Retailer 16
-
$5,864 NZD
$3,305 USD
View
B
Retailer 17
-
$6,354 NZD
$3,581 USD
View
B
Retailer 18
-
$6,402 NZD
£2,841 GBP
View
Retailer 19
-
$6,407 NZD
A$5,555 AUD
View
Price last confirmed 22 days ago
B
Retailer 20
-
$6,526 NZD
$3,678 USD
View
B
Retailer 21
-
$8,960 NZD
$5,050 USD
View
B
Retailer 22
-
$10,539 NZD
$5,940 USD
View
Most Expensive
Queensmith
LG765631503 · Oct 10
$12,889 NZD
£5,720 GBP
View
Price last confirmed 20 days ago
22 more retailers have this diamond
Prices start from $1,618 NZDSave up to $8,921 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
4.51ct Radiant
$1,618 NZD